c0a01f3adc
The use of a shared_ptr is an implementation detail of the VMManager itself when mapping memory. Because of that, we shouldn't require all users of the CodeSet to have to allocate the shared_ptr ahead of time. It's intended that CodeSet simply pass in the required direct data, and that the memory manager takes care of it from that point on. This means we just do the shared pointer allocation in a single place, when loading modules, as opposed to in each loader.
266 lines
8.4 KiB
C++
266 lines
8.4 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 <utility>
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#include <vector>
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#include "common/common_funcs.h"
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#include "common/common_types.h"
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#include "common/file_util.h"
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#include "common/logging/log.h"
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#include "common/swap.h"
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#include "core/file_sys/control_metadata.h"
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#include "core/file_sys/romfs_factory.h"
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#include "core/file_sys/vfs_offset.h"
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#include "core/gdbstub/gdbstub.h"
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#include "core/hle/kernel/code_set.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/kernel/vm_manager.h"
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#include "core/hle/service/filesystem/filesystem.h"
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#include "core/loader/nro.h"
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#include "core/loader/nso.h"
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#include "core/memory.h"
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#include "core/settings.h"
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namespace Loader {
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struct NroSegmentHeader {
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u32_le offset;
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u32_le size;
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};
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static_assert(sizeof(NroSegmentHeader) == 0x8, "NroSegmentHeader has incorrect size.");
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struct NroHeader {
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INSERT_PADDING_BYTES(0x4);
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u32_le module_header_offset;
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INSERT_PADDING_BYTES(0x8);
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u32_le magic;
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INSERT_PADDING_BYTES(0x4);
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u32_le file_size;
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INSERT_PADDING_BYTES(0x4);
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std::array<NroSegmentHeader, 3> segments; // Text, RoData, Data (in that order)
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u32_le bss_size;
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INSERT_PADDING_BYTES(0x44);
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};
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static_assert(sizeof(NroHeader) == 0x80, "NroHeader has incorrect size.");
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struct ModHeader {
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u32_le magic;
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u32_le dynamic_offset;
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u32_le bss_start_offset;
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u32_le bss_end_offset;
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u32_le unwind_start_offset;
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u32_le unwind_end_offset;
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u32_le module_offset; // Offset to runtime-generated module object. typically equal to .bss base
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};
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static_assert(sizeof(ModHeader) == 0x1c, "ModHeader has incorrect size.");
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struct AssetSection {
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u64_le offset;
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u64_le size;
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};
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static_assert(sizeof(AssetSection) == 0x10, "AssetSection has incorrect size.");
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struct AssetHeader {
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u32_le magic;
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u32_le format_version;
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AssetSection icon;
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AssetSection nacp;
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AssetSection romfs;
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};
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static_assert(sizeof(AssetHeader) == 0x38, "AssetHeader has incorrect size.");
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AppLoader_NRO::AppLoader_NRO(FileSys::VirtualFile file) : AppLoader(file) {
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NroHeader nro_header{};
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if (file->ReadObject(&nro_header) != sizeof(NroHeader)) {
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return;
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}
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if (file->GetSize() >= nro_header.file_size + sizeof(AssetHeader)) {
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const u64 offset = nro_header.file_size;
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AssetHeader asset_header{};
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if (file->ReadObject(&asset_header, offset) != sizeof(AssetHeader)) {
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return;
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}
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if (asset_header.format_version != 0) {
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LOG_WARNING(Loader,
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"NRO Asset Header has format {}, currently supported format is 0. If "
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"strange glitches occur with metadata, check NRO assets.",
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asset_header.format_version);
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}
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if (asset_header.magic != Common::MakeMagic('A', 'S', 'E', 'T')) {
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return;
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}
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if (asset_header.nacp.size > 0) {
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nacp = std::make_unique<FileSys::NACP>(std::make_shared<FileSys::OffsetVfsFile>(
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file, asset_header.nacp.size, offset + asset_header.nacp.offset, "Control.nacp"));
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}
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if (asset_header.romfs.size > 0) {
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romfs = std::make_shared<FileSys::OffsetVfsFile>(
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file, asset_header.romfs.size, offset + asset_header.romfs.offset, "game.romfs");
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}
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if (asset_header.icon.size > 0) {
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icon_data = file->ReadBytes(asset_header.icon.size, offset + asset_header.icon.offset);
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}
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}
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}
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AppLoader_NRO::~AppLoader_NRO() = default;
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FileType AppLoader_NRO::IdentifyType(const FileSys::VirtualFile& file) {
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// Read NSO header
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NroHeader nro_header{};
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if (sizeof(NroHeader) != file->ReadObject(&nro_header)) {
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return FileType::Error;
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}
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if (nro_header.magic == Common::MakeMagic('N', 'R', 'O', '0')) {
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return FileType::NRO;
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}
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return FileType::Error;
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}
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static constexpr u32 PageAlignSize(u32 size) {
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return (size + Memory::PAGE_MASK) & ~Memory::PAGE_MASK;
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}
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static bool LoadNroImpl(Kernel::Process& process, const std::vector<u8>& data,
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const std::string& name, VAddr load_base) {
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if (data.size() < sizeof(NroHeader)) {
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return {};
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}
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// Read NSO header
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NroHeader nro_header{};
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std::memcpy(&nro_header, data.data(), sizeof(NroHeader));
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if (nro_header.magic != Common::MakeMagic('N', 'R', 'O', '0')) {
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return {};
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}
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// Build program image
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std::vector<u8> program_image(PageAlignSize(nro_header.file_size));
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std::memcpy(program_image.data(), data.data(), program_image.size());
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if (program_image.size() != PageAlignSize(nro_header.file_size)) {
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return {};
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}
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Kernel::CodeSet codeset;
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for (std::size_t i = 0; i < nro_header.segments.size(); ++i) {
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codeset.segments[i].addr = nro_header.segments[i].offset;
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codeset.segments[i].offset = nro_header.segments[i].offset;
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codeset.segments[i].size = PageAlignSize(nro_header.segments[i].size);
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}
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if (!Settings::values.program_args.empty()) {
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const auto arg_data = Settings::values.program_args;
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codeset.DataSegment().size += NSO_ARGUMENT_DATA_ALLOCATION_SIZE;
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NSOArgumentHeader args_header{
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NSO_ARGUMENT_DATA_ALLOCATION_SIZE, static_cast<u32_le>(arg_data.size()), {}};
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const auto end_offset = program_image.size();
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program_image.resize(static_cast<u32>(program_image.size()) +
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NSO_ARGUMENT_DATA_ALLOCATION_SIZE);
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std::memcpy(program_image.data() + end_offset, &args_header, sizeof(NSOArgumentHeader));
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std::memcpy(program_image.data() + end_offset + sizeof(NSOArgumentHeader), arg_data.data(),
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arg_data.size());
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}
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// Default .bss to NRO header bss size if MOD0 section doesn't exist
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u32 bss_size{PageAlignSize(nro_header.bss_size)};
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// Read MOD header
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ModHeader mod_header{};
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std::memcpy(&mod_header, program_image.data() + nro_header.module_header_offset,
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sizeof(ModHeader));
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const bool has_mod_header{mod_header.magic == Common::MakeMagic('M', 'O', 'D', '0')};
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if (has_mod_header) {
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// Resize program image to include .bss section and page align each section
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bss_size = PageAlignSize(mod_header.bss_end_offset - mod_header.bss_start_offset);
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}
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codeset.DataSegment().size += bss_size;
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program_image.resize(static_cast<u32>(program_image.size()) + bss_size);
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// Load codeset for current process
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codeset.memory = std::move(program_image);
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process.LoadModule(std::move(codeset), load_base);
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// Register module with GDBStub
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GDBStub::RegisterModule(name, load_base, load_base);
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return true;
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}
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bool AppLoader_NRO::LoadNro(Kernel::Process& process, const FileSys::VfsFile& file,
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VAddr load_base) {
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return LoadNroImpl(process, file.ReadAllBytes(), file.GetName(), load_base);
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}
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ResultStatus AppLoader_NRO::Load(Kernel::Process& process) {
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if (is_loaded) {
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return ResultStatus::ErrorAlreadyLoaded;
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}
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// Load NRO
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const VAddr base_address = process.VMManager().GetCodeRegionBaseAddress();
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if (!LoadNro(process, *file, base_address)) {
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return ResultStatus::ErrorLoadingNRO;
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}
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if (romfs != nullptr)
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Service::FileSystem::RegisterRomFS(std::make_unique<FileSys::RomFSFactory>(*this));
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process.Run(base_address, Kernel::THREADPRIO_DEFAULT, Memory::DEFAULT_STACK_SIZE);
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is_loaded = true;
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return ResultStatus::Success;
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}
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ResultStatus AppLoader_NRO::ReadIcon(std::vector<u8>& buffer) {
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if (icon_data.empty()) {
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return ResultStatus::ErrorNoIcon;
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}
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buffer = icon_data;
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return ResultStatus::Success;
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}
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ResultStatus AppLoader_NRO::ReadProgramId(u64& out_program_id) {
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if (nacp == nullptr) {
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return ResultStatus::ErrorNoControl;
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}
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out_program_id = nacp->GetTitleId();
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return ResultStatus::Success;
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}
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ResultStatus AppLoader_NRO::ReadRomFS(FileSys::VirtualFile& dir) {
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if (romfs == nullptr) {
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return ResultStatus::ErrorNoRomFS;
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}
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dir = romfs;
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return ResultStatus::Success;
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}
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ResultStatus AppLoader_NRO::ReadTitle(std::string& title) {
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if (nacp == nullptr) {
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return ResultStatus::ErrorNoControl;
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}
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title = nacp->GetApplicationName();
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return ResultStatus::Success;
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}
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bool AppLoader_NRO::IsRomFSUpdatable() const {
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return false;
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}
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} // namespace Loader
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