diff options
Diffstat (limited to '')
-rw-r--r-- | src/core/loader/nso.cpp | 114 |
1 files changed, 55 insertions, 59 deletions
diff --git a/src/core/loader/nso.cpp b/src/core/loader/nso.cpp index 6ded0b707..714d85a59 100644 --- a/src/core/loader/nso.cpp +++ b/src/core/loader/nso.cpp @@ -7,10 +7,13 @@ #include <lz4.h> #include "common/common_funcs.h" #include "common/file_util.h" +#include "common/hex_util.h" #include "common/logging/log.h" #include "common/swap.h" +#include "core/core.h" #include "core/file_sys/patch_manager.h" #include "core/gdbstub/gdbstub.h" +#include "core/hle/kernel/code_set.h" #include "core/hle/kernel/process.h" #include "core/hle/kernel/vm_manager.h" #include "core/loader/nso.h" @@ -18,36 +21,8 @@ #include "core/settings.h" namespace Loader { - -struct NsoSegmentHeader { - u32_le offset; - u32_le location; - u32_le size; - union { - u32_le alignment; - u32_le bss_size; - }; -}; -static_assert(sizeof(NsoSegmentHeader) == 0x10, "NsoSegmentHeader has incorrect size."); - -struct NsoHeader { - u32_le magic; - u32_le version; - INSERT_PADDING_WORDS(1); - u8 flags; - std::array<NsoSegmentHeader, 3> segments; // Text, RoData, Data (in that order) - std::array<u8, 0x20> build_id; - std::array<u32_le, 3> segments_compressed_size; - - bool IsSegmentCompressed(size_t segment_num) const { - ASSERT_MSG(segment_num < 3, "Invalid segment {}", segment_num); - return ((flags >> segment_num) & 1); - } -}; -static_assert(sizeof(NsoHeader) == 0x6c, "NsoHeader has incorrect size."); -static_assert(std::is_trivially_copyable_v<NsoHeader>, "NsoHeader isn't trivially copyable."); - -struct ModHeader { +namespace { +struct MODHeader { u32_le magic; u32_le dynamic_offset; u32_le bss_start_offset; @@ -56,25 +31,10 @@ struct ModHeader { u32_le eh_frame_hdr_end_offset; u32_le module_offset; // Offset to runtime-generated module object. typically equal to .bss base }; -static_assert(sizeof(ModHeader) == 0x1c, "ModHeader has incorrect size."); - -AppLoader_NSO::AppLoader_NSO(FileSys::VirtualFile file) : AppLoader(std::move(file)) {} +static_assert(sizeof(MODHeader) == 0x1c, "MODHeader has incorrect size."); -FileType AppLoader_NSO::IdentifyType(const FileSys::VirtualFile& file) { - u32 magic = 0; - if (file->ReadObject(&magic) != sizeof(magic)) { - return FileType::Error; - } - - if (Common::MakeMagic('N', 'S', 'O', '0') != magic) { - return FileType::Error; - } - - return FileType::NSO; -} - -static std::vector<u8> DecompressSegment(const std::vector<u8>& compressed_data, - const NsoSegmentHeader& header) { +std::vector<u8> DecompressSegment(const std::vector<u8>& compressed_data, + const NSOSegmentHeader& header) { std::vector<u8> uncompressed_data(header.size); const int bytes_uncompressed = LZ4_decompress_safe(reinterpret_cast<const char*>(compressed_data.data()), @@ -88,23 +48,47 @@ static std::vector<u8> DecompressSegment(const std::vector<u8>& compressed_data, return uncompressed_data; } -static constexpr u32 PageAlignSize(u32 size) { +constexpr u32 PageAlignSize(u32 size) { return (size + Memory::PAGE_MASK) & ~Memory::PAGE_MASK; } +} // Anonymous namespace + +bool NSOHeader::IsSegmentCompressed(size_t segment_num) const { + ASSERT_MSG(segment_num < 3, "Invalid segment {}", segment_num); + return ((flags >> segment_num) & 1) != 0; +} + +AppLoader_NSO::AppLoader_NSO(FileSys::VirtualFile file) : AppLoader(std::move(file)) {} + +FileType AppLoader_NSO::IdentifyType(const FileSys::VirtualFile& file) { + u32 magic = 0; + if (file->ReadObject(&magic) != sizeof(magic)) { + return FileType::Error; + } + + if (Common::MakeMagic('N', 'S', 'O', '0') != magic) { + return FileType::Error; + } + + return FileType::NSO; +} std::optional<VAddr> AppLoader_NSO::LoadModule(Kernel::Process& process, const FileSys::VfsFile& file, VAddr load_base, bool should_pass_arguments, std::optional<FileSys::PatchManager> pm) { - if (file.GetSize() < sizeof(NsoHeader)) + if (file.GetSize() < sizeof(NSOHeader)) { return {}; + } - NsoHeader nso_header{}; - if (sizeof(NsoHeader) != file.ReadObject(&nso_header)) + NSOHeader nso_header{}; + if (sizeof(NSOHeader) != file.ReadObject(&nso_header)) { return {}; + } - if (nso_header.magic != Common::MakeMagic('N', 'S', 'O', '0')) + if (nso_header.magic != Common::MakeMagic('N', 'S', 'O', '0')) { return {}; + } // Build program image Kernel::CodeSet codeset; @@ -140,10 +124,10 @@ std::optional<VAddr> AppLoader_NSO::LoadModule(Kernel::Process& process, std::memcpy(&module_offset, program_image.data() + 4, sizeof(u32)); // Read MOD header - ModHeader mod_header{}; + MODHeader mod_header{}; // Default .bss to size in segment header if MOD0 section doesn't exist u32 bss_size{PageAlignSize(nso_header.segments[2].bss_size)}; - std::memcpy(&mod_header, program_image.data() + module_offset, sizeof(ModHeader)); + std::memcpy(&mod_header, program_image.data() + module_offset, sizeof(MODHeader)); const bool has_mod_header{mod_header.magic == Common::MakeMagic('M', 'O', 'D', '0')}; if (has_mod_header) { // Resize program image to include .bss section and page align each section @@ -155,13 +139,25 @@ std::optional<VAddr> AppLoader_NSO::LoadModule(Kernel::Process& process, // Apply patches if necessary if (pm && (pm->HasNSOPatch(nso_header.build_id) || Settings::values.dump_nso)) { - std::vector<u8> pi_header(program_image.size() + 0x100); - std::memcpy(pi_header.data(), &nso_header, sizeof(NsoHeader)); - std::memcpy(pi_header.data() + 0x100, program_image.data(), program_image.size()); + std::vector<u8> pi_header(sizeof(NSOHeader) + program_image.size()); + pi_header.insert(pi_header.begin(), reinterpret_cast<u8*>(&nso_header), + reinterpret_cast<u8*>(&nso_header) + sizeof(NSOHeader)); + pi_header.insert(pi_header.begin() + sizeof(NSOHeader), program_image.begin(), + program_image.end()); pi_header = pm->PatchNSO(pi_header); - std::memcpy(program_image.data(), pi_header.data() + 0x100, program_image.size()); + std::copy(pi_header.begin() + sizeof(NSOHeader), pi_header.end(), program_image.begin()); + } + + // Apply cheats if they exist and the program has a valid title ID + if (pm) { + auto& system = Core::System::GetInstance(); + const auto cheats = pm->CreateCheatList(system, nso_header.build_id); + if (!cheats.empty()) { + system.RegisterCheatList(cheats, Common::HexArrayToString(nso_header.build_id), + load_base, load_base + program_image.size()); + } } // Load codeset for current process |