2ea45fe75b
Previously, these were sitting outside of the Kernel namespace, which doesn't really make sense, given they're related to the Thread class which is within the Kernel namespace.
241 lines
7.4 KiB
C++
241 lines
7.4 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/core.h"
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#include "core/file_sys/control_metadata.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/kernel.h"
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#include "core/hle/kernel/process.h"
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#include "core/hle/kernel/resource_limit.h"
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#include "core/loader/nro.h"
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#include "core/memory.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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bool AppLoader_NRO::LoadNro(FileSys::VirtualFile file, VAddr load_base) {
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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 {};
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}
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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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auto& kernel = Core::System::GetInstance().Kernel();
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Kernel::SharedPtr<Kernel::CodeSet> codeset = Kernel::CodeSet::Create(kernel, "");
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std::vector<u8> program_image = file->ReadBytes(PageAlignSize(nro_header.file_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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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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// Read MOD header
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ModHeader mod_header{};
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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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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->name = file->GetName();
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codeset->memory = std::make_shared<std::vector<u8>>(std::move(program_image));
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Core::CurrentProcess()->LoadModule(codeset, load_base);
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// Register module with GDBStub
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GDBStub::RegisterModule(codeset->name, load_base, load_base);
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return true;
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}
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ResultStatus AppLoader_NRO::Load(Kernel::SharedPtr<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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static constexpr VAddr base_addr{Memory::PROCESS_IMAGE_VADDR};
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if (!LoadNro(file, base_addr)) {
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return ResultStatus::ErrorLoadingNRO;
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}
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auto& kernel = Core::System::GetInstance().Kernel();
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process->svc_access_mask.set();
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process->resource_limit =
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kernel.ResourceLimitForCategory(Kernel::ResourceLimitCategory::APPLICATION);
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process->Run(base_addr, 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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