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https://github.com/PabloMK7/citra.git
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Loader: Refactored loading functions to only read data from binary if called.
NCCH: Updated LoadExec to use Memory::WriteBlock function to load binary code.
This commit is contained in:
bunnei
parent
6aebd4ac98
commit
a7f1c54490
3 changed files with 141 additions and 74 deletions
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@ -51,37 +51,37 @@ public:
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* @param error ResultStatus result of function
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* @return Reference to code buffer
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*/
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virtual const std::vector<u8>& GetCode(ResultStatus& error) const {
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virtual const std::vector<u8>& ReadCode(ResultStatus& error) const {
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error = ResultStatus::ErrorNotImplemented;
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return code;
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}
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/**
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* Get the icon (typically .icon section) of the application
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* Get the icon (typically icon section) of the application
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* @param error ResultStatus result of function
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* @return Reference to icon buffer
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*/
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virtual const std::vector<u8>& GetIcon(ResultStatus& error) const {
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virtual const std::vector<u8>& ReadIcon(ResultStatus& error) const {
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error = ResultStatus::ErrorNotImplemented;
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return icon;
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}
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/**
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* Get the banner (typically .banner section) of the application
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* Get the banner (typically banner section) of the application
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* @param error ResultStatus result of function
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* @return Reference to banner buffer
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*/
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virtual const std::vector<u8>& GetBanner(ResultStatus& error) const {
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virtual const std::vector<u8>& ReadBanner(ResultStatus& error) const {
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error = ResultStatus::ErrorNotImplemented;
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return banner;
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}
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/**
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* Get the logo (typically .logo section) of the application
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* Get the logo (typically logo section) of the application
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* @param error ResultStatus result of function
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* @return Reference to logo buffer
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*/
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virtual const std::vector<u8>& GetLogo(ResultStatus& error) const {
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virtual const std::vector<u8>& ReadLogo(ResultStatus& error) const {
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error = ResultStatus::ErrorNotImplemented;
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return logo;
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}
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@ -91,7 +91,7 @@ public:
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* @param error ResultStatus result of function
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* @return Reference to RomFs archive buffer
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*/
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virtual const std::vector<u8>& GetRomFs(ResultStatus error) const {
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virtual const std::vector<u8>& ReadRomFS(ResultStatus& error) const {
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error = ResultStatus::ErrorNotImplemented;
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return romfs;
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}
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@ -113,36 +113,39 @@ AppLoader_NCCH::AppLoader_NCCH(const std::string& filename) {
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/// AppLoader_NCCH destructor
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AppLoader_NCCH::~AppLoader_NCCH() {
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if (file.IsOpen())
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file.Close();
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}
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/**
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* Loads .code section into memory for booting
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* @return ResultStatus result of function
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*/
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ResultStatus AppLoader_NCCH::LoadExec() const {
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ResultStatus AppLoader_NCCH::LoadExec() {
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if (!is_loaded)
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return ResultStatus::ErrorNotLoaded;
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for (std::vector<u8>::size_type i = 0; i != code.size(); i++) {
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Memory::Write8(entry_point + i, code[i]);
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}
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Kernel::LoadExec(entry_point);
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ResultStatus res;
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code = ReadCode(res);
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return ResultStatus::Success;
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if (ResultStatus::Success == res) {
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Memory::WriteBlock(entry_point, &code[0], code.size());
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Kernel::LoadExec(entry_point);
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}
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return res;
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}
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/**
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* Reads an application ExeFS section of an NCCH file into AppLoader (e.g. .code, .logo, etc.)
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* @param file Handle to file to read from
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* @param name Name of section to read out of NCCH file
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* @param buffer Buffer to read section into.
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* @param buffer Vector to read data into
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* @param error ResultStatus result of function
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* @return Reference to buffer of data that was read
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*/
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ResultStatus AppLoader_NCCH::LoadSectionExeFS(File::IOFile& file, const char* name,
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std::vector<u8>& buffer) {
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const std::vector<u8>& AppLoader_NCCH::LoadSectionExeFS(const char* name, std::vector<u8>& buffer,
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ResultStatus& error) {
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// Iterate through the ExeFs archive until we find the .code file...
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for (int i = 0; i < kMaxSections; i++) {
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// Load the specified section...
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if (strcmp((const char*)exefs_header.section[i].name, name) == 0) {
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INFO_LOG(LOADER, "ExeFS section %d:", i);
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@ -161,47 +164,25 @@ ResultStatus AppLoader_NCCH::LoadSectionExeFS(File::IOFile& file, const char* na
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file.ReadBytes(&temp_buffer[0], exefs_header.section[i].size);
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// Decompress .code section...
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u32 decompressed_size = LZSS_GetDecompressedSize(&temp_buffer[0], exefs_header.section[i].size);
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u32 decompressed_size = LZSS_GetDecompressedSize(&temp_buffer[0],
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exefs_header.section[i].size);
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buffer.resize(decompressed_size);
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if (!LZSS_Decompress(&temp_buffer[0], exefs_header.section[i].size, &buffer[0],
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decompressed_size)) {
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return ResultStatus::ErrorInvalidFormat;
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error = ResultStatus::ErrorInvalidFormat;
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return buffer;
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}
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// Section is uncompressed...
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} else {
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buffer.resize(exefs_header.section[i].size);
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file.ReadBytes(&buffer[0], exefs_header.section[i].size);
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}
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return ResultStatus::Success;
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error = ResultStatus::Success;
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return buffer;
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}
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}
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return ResultStatus::ErrorNotUsed;
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}
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/**
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* Reads RomFS of an NCCH file into AppLoader
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* @param file Handle to file to read from
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* @return ResultStatus result of function
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*/
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ResultStatus AppLoader_NCCH::LoadRomFS(File::IOFile& file) {
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// Check if the NCCH has a RomFS...
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if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0) {
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u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000;
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u32 romfs_size = (ncch_header.romfs_size * kBlockSize) - 0x1000;
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INFO_LOG(LOADER, "RomFS offset: 0x%08X", romfs_offset);
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INFO_LOG(LOADER, "RomFS size: 0x%08X", romfs_size);
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romfs.resize(romfs_size);
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file.Seek(romfs_offset, 0);
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file.ReadBytes(&romfs[0], romfs_size);
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return ResultStatus::Success;
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} else {
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NOTICE_LOG(LOADER, "RomFS unused");
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}
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return ResultStatus::ErrorNotUsed;
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error = ResultStatus::ErrorNotUsed;
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return buffer;
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}
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/**
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@ -216,7 +197,7 @@ ResultStatus AppLoader_NCCH::Load() {
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if (is_loaded)
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return ResultStatus::ErrorAlreadyLoaded;
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File::IOFile file(filename, "rb");
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file = File::IOFile(filename, "rb");
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if (file.IsOpen()) {
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file.ReadBytes(&ncch_header, sizeof(NCCH_Header));
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@ -255,15 +236,6 @@ ResultStatus AppLoader_NCCH::Load() {
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file.Seek(exefs_offset + ncch_offset, 0);
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file.ReadBytes(&exefs_header, sizeof(ExeFs_Header));
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// TODO(bunnei): Check ResultStatus of these...
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LoadSectionExeFS(file, ".code", code);
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LoadSectionExeFS(file, "banner", banner);
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LoadSectionExeFS(file, "icon", icon);
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LoadSectionExeFS(file, "logo", logo);
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LoadRomFS(file);
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is_loaded = true; // Set state to loaded
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LoadExec(); // Load the executable into memory for booting
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@ -273,4 +245,68 @@ ResultStatus AppLoader_NCCH::Load() {
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return ResultStatus::Error;
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}
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/**
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* Get the code (typically .code section) of the application
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* @param error ResultStatus result of function
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* @return Reference to code buffer
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*/
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const std::vector<u8>& AppLoader_NCCH::ReadCode(ResultStatus& error) {
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return LoadSectionExeFS(".code", code, error);
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}
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/**
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* Get the icon (typically icon section) of the application
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* @param error ResultStatus result of function
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* @return Reference to icon buffer
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*/
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const std::vector<u8>& AppLoader_NCCH::ReadIcon(ResultStatus& error) {
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return LoadSectionExeFS("icon", icon, error);
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}
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/**
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* Get the banner (typically banner section) of the application
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* @param error ResultStatus result of function
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* @return Reference to banner buffer
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*/
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const std::vector<u8>& AppLoader_NCCH::ReadBanner(ResultStatus& error) {
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return LoadSectionExeFS("banner", banner, error);
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}
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/**
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* Get the logo (typically logo section) of the application
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* @param error ResultStatus result of function
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* @return Reference to logo buffer
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*/
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const std::vector<u8>& AppLoader_NCCH::ReadLogo(ResultStatus& error) {
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return LoadSectionExeFS("logo", logo, error);
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}
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/**
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* Get the RomFs archive of the application
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* @param error ResultStatus result of function
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* @return Reference to RomFs archive buffer
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*/
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const std::vector<u8>& AppLoader_NCCH::ReadRomFS(ResultStatus& error) {
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// Check if the NCCH has a RomFS...
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if (ncch_header.romfs_offset != 0 && ncch_header.romfs_size != 0) {
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u32 romfs_offset = ncch_offset + (ncch_header.romfs_offset * kBlockSize) + 0x1000;
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u32 romfs_size = (ncch_header.romfs_size * kBlockSize) - 0x1000;
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INFO_LOG(LOADER, "RomFS offset: 0x%08X", romfs_offset);
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INFO_LOG(LOADER, "RomFS size: 0x%08X", romfs_size);
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romfs.resize(romfs_size);
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file.Seek(romfs_offset, 0);
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file.ReadBytes(&romfs[0], romfs_size);
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error = ResultStatus::Success;
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return romfs;
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} else {
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NOTICE_LOG(LOADER, "RomFS unused");
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}
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error = ResultStatus::ErrorNotUsed;
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return romfs;
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}
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} // namespace Loader
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@ -156,35 +156,66 @@ public:
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*/
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ResultStatus Load();
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/**
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* Get the code (typically .code section) of the application
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* @param error ResultStatus result of function
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* @return Reference to code buffer
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*/
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const std::vector<u8>& ReadCode(ResultStatus& error);
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/**
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* Get the icon (typically icon section) of the application
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* @param error ResultStatus result of function
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* @return Reference to icon buffer
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*/
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const std::vector<u8>& ReadIcon(ResultStatus& error);
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/**
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* Get the banner (typically banner section) of the application
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* @param error ResultStatus result of function
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* @return Reference to banner buffer
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*/
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const std::vector<u8>& ReadBanner(ResultStatus& error);
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/**
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* Get the logo (typically logo section) of the application
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* @param error ResultStatus result of function
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* @return Reference to logo buffer
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*/
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const std::vector<u8>& ReadLogo(ResultStatus& error);
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/**
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* Get the RomFs archive of the application
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* @param error ResultStatus result of function
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* @return Reference to RomFs archive buffer
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*/
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const std::vector<u8>& ReadRomFS(ResultStatus& error);
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private:
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/**
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* Reads an application ExeFS section of an NCCH file into AppLoader (e.g. .code, .logo, etc.)
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* @param file Handle to file to read from
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* @param name Name of section to read out of NCCH file
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* @param buffer Buffer to read section into.
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* @return ResultStatus result of function
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* @param buffer Vector to read data into
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* @param error ResultStatus result of function
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* @return Reference to buffer of data that was read
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*/
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ResultStatus LoadSectionExeFS(File::IOFile& file, const char* name, std::vector<u8>& buffer);
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/**
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* Reads RomFS of an NCCH file into AppLoader
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* @param file Handle to file to read from
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* @return ResultStatus result of function
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*/
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ResultStatus LoadRomFS(File::IOFile& file);
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const std::vector<u8>& LoadSectionExeFS(const char* name, std::vector<u8>& buffer,
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ResultStatus& error);
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/**
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* Loads .code section into memory for booting
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* @return ResultStatus result of function
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*/
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ResultStatus LoadExec() const;
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ResultStatus LoadExec();
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File::IOFile file;
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std::string filename;
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bool is_loaded;
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bool is_compressed;
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u32 entry_point;
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u32 entry_point;
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u32 ncch_offset; // Offset to NCCH header, can be 0 or after NCSD header
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u32 exefs_offset;
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