yuzu/src/core/loader/nro.cpp
Fernando Sahmkow 9bede4eeed VM_Manager: Align allocated memory to 256bytes
This commit ensures that all backing memory allocated for the Guest CPU
is aligned to 256 bytes. This due to how gpu memory works and the heavy
constraints it has in the alignment of physical memory.
2019-07-19 10:06:08 -04:00

265 lines
8.4 KiB
C++

// Copyright 2018 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <utility>
#include <vector>
#include "common/common_funcs.h"
#include "common/common_types.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/swap.h"
#include "core/file_sys/control_metadata.h"
#include "core/file_sys/romfs_factory.h"
#include "core/file_sys/vfs_offset.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/hle/service/filesystem/filesystem.h"
#include "core/loader/nro.h"
#include "core/loader/nso.h"
#include "core/memory.h"
#include "core/settings.h"
namespace Loader {
struct NroSegmentHeader {
u32_le offset;
u32_le size;
};
static_assert(sizeof(NroSegmentHeader) == 0x8, "NroSegmentHeader has incorrect size.");
struct NroHeader {
INSERT_PADDING_BYTES(0x4);
u32_le module_header_offset;
INSERT_PADDING_BYTES(0x8);
u32_le magic;
INSERT_PADDING_BYTES(0x4);
u32_le file_size;
INSERT_PADDING_BYTES(0x4);
std::array<NroSegmentHeader, 3> segments; // Text, RoData, Data (in that order)
u32_le bss_size;
INSERT_PADDING_BYTES(0x44);
};
static_assert(sizeof(NroHeader) == 0x80, "NroHeader has incorrect size.");
struct ModHeader {
u32_le magic;
u32_le dynamic_offset;
u32_le bss_start_offset;
u32_le bss_end_offset;
u32_le unwind_start_offset;
u32_le unwind_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.");
struct AssetSection {
u64_le offset;
u64_le size;
};
static_assert(sizeof(AssetSection) == 0x10, "AssetSection has incorrect size.");
struct AssetHeader {
u32_le magic;
u32_le format_version;
AssetSection icon;
AssetSection nacp;
AssetSection romfs;
};
static_assert(sizeof(AssetHeader) == 0x38, "AssetHeader has incorrect size.");
AppLoader_NRO::AppLoader_NRO(FileSys::VirtualFile file) : AppLoader(file) {
NroHeader nro_header{};
if (file->ReadObject(&nro_header) != sizeof(NroHeader)) {
return;
}
if (file->GetSize() >= nro_header.file_size + sizeof(AssetHeader)) {
const u64 offset = nro_header.file_size;
AssetHeader asset_header{};
if (file->ReadObject(&asset_header, offset) != sizeof(AssetHeader)) {
return;
}
if (asset_header.format_version != 0) {
LOG_WARNING(Loader,
"NRO Asset Header has format {}, currently supported format is 0. If "
"strange glitches occur with metadata, check NRO assets.",
asset_header.format_version);
}
if (asset_header.magic != Common::MakeMagic('A', 'S', 'E', 'T')) {
return;
}
if (asset_header.nacp.size > 0) {
nacp = std::make_unique<FileSys::NACP>(std::make_shared<FileSys::OffsetVfsFile>(
file, asset_header.nacp.size, offset + asset_header.nacp.offset, "Control.nacp"));
}
if (asset_header.romfs.size > 0) {
romfs = std::make_shared<FileSys::OffsetVfsFile>(
file, asset_header.romfs.size, offset + asset_header.romfs.offset, "game.romfs");
}
if (asset_header.icon.size > 0) {
icon_data = file->ReadBytes(asset_header.icon.size, offset + asset_header.icon.offset);
}
}
}
AppLoader_NRO::~AppLoader_NRO() = default;
FileType AppLoader_NRO::IdentifyType(const FileSys::VirtualFile& file) {
// Read NSO header
NroHeader nro_header{};
if (sizeof(NroHeader) != file->ReadObject(&nro_header)) {
return FileType::Error;
}
if (nro_header.magic == Common::MakeMagic('N', 'R', 'O', '0')) {
return FileType::NRO;
}
return FileType::Error;
}
static constexpr u32 PageAlignSize(u32 size) {
return (size + Memory::PAGE_MASK) & ~Memory::PAGE_MASK;
}
static bool LoadNroImpl(Kernel::Process& process, const std::vector<u8>& data,
const std::string& name, VAddr load_base) {
if (data.size() < sizeof(NroHeader)) {
return {};
}
// Read NSO header
NroHeader nro_header{};
std::memcpy(&nro_header, data.data(), sizeof(NroHeader));
if (nro_header.magic != Common::MakeMagic('N', 'R', 'O', '0')) {
return {};
}
// Build program image
Kernel::PhysicalMemory program_image(PageAlignSize(nro_header.file_size));
std::memcpy(program_image.data(), data.data(), program_image.size());
if (program_image.size() != PageAlignSize(nro_header.file_size)) {
return {};
}
Kernel::CodeSet codeset;
for (std::size_t i = 0; i < nro_header.segments.size(); ++i) {
codeset.segments[i].addr = nro_header.segments[i].offset;
codeset.segments[i].offset = nro_header.segments[i].offset;
codeset.segments[i].size = PageAlignSize(nro_header.segments[i].size);
}
if (!Settings::values.program_args.empty()) {
const auto arg_data = Settings::values.program_args;
codeset.DataSegment().size += NSO_ARGUMENT_DATA_ALLOCATION_SIZE;
NSOArgumentHeader args_header{
NSO_ARGUMENT_DATA_ALLOCATION_SIZE, static_cast<u32_le>(arg_data.size()), {}};
const auto end_offset = program_image.size();
program_image.resize(static_cast<u32>(program_image.size()) +
NSO_ARGUMENT_DATA_ALLOCATION_SIZE);
std::memcpy(program_image.data() + end_offset, &args_header, sizeof(NSOArgumentHeader));
std::memcpy(program_image.data() + end_offset + sizeof(NSOArgumentHeader), arg_data.data(),
arg_data.size());
}
// Default .bss to NRO header bss size if MOD0 section doesn't exist
u32 bss_size{PageAlignSize(nro_header.bss_size)};
// Read MOD header
ModHeader mod_header{};
std::memcpy(&mod_header, program_image.data() + nro_header.module_header_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
bss_size = PageAlignSize(mod_header.bss_end_offset - mod_header.bss_start_offset);
}
codeset.DataSegment().size += bss_size;
program_image.resize(static_cast<u32>(program_image.size()) + bss_size);
// Load codeset for current process
codeset.memory = std::move(program_image);
process.LoadModule(std::move(codeset), load_base);
// Register module with GDBStub
GDBStub::RegisterModule(name, load_base, load_base);
return true;
}
bool AppLoader_NRO::LoadNro(Kernel::Process& process, const FileSys::VfsFile& file,
VAddr load_base) {
return LoadNroImpl(process, file.ReadAllBytes(), file.GetName(), load_base);
}
AppLoader_NRO::LoadResult AppLoader_NRO::Load(Kernel::Process& process) {
if (is_loaded) {
return {ResultStatus::ErrorAlreadyLoaded, {}};
}
// Load NRO
const VAddr base_address = process.VMManager().GetCodeRegionBaseAddress();
if (!LoadNro(process, *file, base_address)) {
return {ResultStatus::ErrorLoadingNRO, {}};
}
if (romfs != nullptr) {
Service::FileSystem::RegisterRomFS(std::make_unique<FileSys::RomFSFactory>(*this));
}
is_loaded = true;
return {ResultStatus::Success,
LoadParameters{Kernel::THREADPRIO_DEFAULT, Memory::DEFAULT_STACK_SIZE}};
}
ResultStatus AppLoader_NRO::ReadIcon(std::vector<u8>& buffer) {
if (icon_data.empty()) {
return ResultStatus::ErrorNoIcon;
}
buffer = icon_data;
return ResultStatus::Success;
}
ResultStatus AppLoader_NRO::ReadProgramId(u64& out_program_id) {
if (nacp == nullptr) {
return ResultStatus::ErrorNoControl;
}
out_program_id = nacp->GetTitleId();
return ResultStatus::Success;
}
ResultStatus AppLoader_NRO::ReadRomFS(FileSys::VirtualFile& dir) {
if (romfs == nullptr) {
return ResultStatus::ErrorNoRomFS;
}
dir = romfs;
return ResultStatus::Success;
}
ResultStatus AppLoader_NRO::ReadTitle(std::string& title) {
if (nacp == nullptr) {
return ResultStatus::ErrorNoControl;
}
title = nacp->GetApplicationName();
return ResultStatus::Success;
}
bool AppLoader_NRO::IsRomFSUpdatable() const {
return false;
}
} // namespace Loader