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nso: Refactor and allocate .bss section.

This commit is contained in:
bunnei 2017-09-30 14:15:09 -04:00
parent fa1c7c7ee1
commit 8c92435ded
9 changed files with 162 additions and 132 deletions
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9
src/core/file_sys/archive_savedata.cpp
View File

@ -15,16 +15,19 @@ ArchiveFactory_SaveData::ArchiveFactory_SaveData(
: sd_savedata_source(sd_savedata) {}
ResultVal<std::unique_ptr<ArchiveBackend>> ArchiveFactory_SaveData::Open(const Path& path) {
return sd_savedata_source->Open(Kernel::g_current_process->codeset->program_id);
UNIMPLEMENTED();
return {}; //sd_savedata_source->Open(Kernel::g_current_process->codeset->program_id);
}
ResultCode ArchiveFactory_SaveData::Format(const Path& path,
const FileSys::ArchiveFormatInfo& format_info) {
return sd_savedata_source->Format(Kernel::g_current_process->codeset->program_id, format_info);
UNIMPLEMENTED();
return RESULT_SUCCESS; //sd_savedata_source->Format(Kernel::g_current_process->codeset->program_id, format_info);
}
ResultVal<ArchiveFormatInfo> ArchiveFactory_SaveData::GetFormatInfo(const Path& path) const {
return sd_savedata_source->GetFormatInfo(Kernel::g_current_process->codeset->program_id);
UNIMPLEMENTED();
return {}; //sd_savedata_source->GetFormatInfo(Kernel::g_current_process->codeset->program_id);
}
} // namespace FileSys

9
src/core/hle/kernel/process.cpp
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@ -30,10 +30,10 @@ CodeSet::~CodeSet() {}
u32 Process::next_process_id;
SharedPtr<Process> Process::Create(SharedPtr<CodeSet> code_set) {
SharedPtr<Process> Process::Create(std::string&& name) {
SharedPtr<Process> process(new Process);
process->codeset = code_set;
process->name = std::move(name);
process->flags.raw = 0;
process->flags.memory_region.Assign(MemoryRegion::APPLICATION);
@ -112,7 +112,7 @@ void Process::ParseKernelCaps(const u32* kernel_caps, size_t len) {
}
}
void Process::Run(s32 main_thread_priority, u32 stack_size) {
void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
// Allocate and map stack
vm_manager
.MapMemoryBlock(Memory::HEAP_VADDR_END - stack_size,
@ -129,7 +129,8 @@ void Process::Run(s32 main_thread_priority, u32 stack_size) {
}
vm_manager.LogLayout(Log::Level::Debug);
Kernel::SetupMainThread(codeset->entrypoint, main_thread_priority);
Kernel::SetupMainThread(entry_point, main_thread_priority);
}
void Process::LoadModule(SharedPtr<CodeSet> module_, VAddr base_addr) {
memory_region = GetMemoryRegion(flags.memory_region);

9
src/core/hle/kernel/process.h
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@ -93,13 +93,13 @@ private:
class Process final : public Object {
public:
static SharedPtr<Process> Create(SharedPtr<CodeSet> code_set);
static SharedPtr<Process> Create(std::string&& name);
std::string GetTypeName() const override {
return "Process";
}
std::string GetName() const override {
return codeset->name;
return name;
}
static const HandleType HANDLE_TYPE = HandleType::Process;
@ -109,7 +109,6 @@ public:
static u32 next_process_id;
SharedPtr<CodeSet> codeset;
/// Resource limit descriptor for this process
SharedPtr<ResourceLimit> resource_limit;
@ -138,7 +137,7 @@ public:
/**
* Applies address space changes and launches the process main thread.
*/
void Run(s32 main_thread_priority, u32 stack_size);
void Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size);
void LoadModule(SharedPtr<CodeSet> module_, VAddr base_addr);
@ -166,6 +165,8 @@ public:
/// This vector will grow as more pages are allocated for new threads.
std::vector<std::bitset<8>> tls_slots;
std::string name;
VAddr GetLinearHeapAreaAddress() const;
VAddr GetLinearHeapBase() const;
VAddr GetLinearHeapLimit() const;

5
src/core/loader/3dsx.cpp
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@ -267,7 +267,8 @@ ResultStatus AppLoader_THREEDSX::Load() {
return ResultStatus::Error;
codeset->name = filename;
Kernel::g_current_process = Kernel::Process::Create(std::move(codeset));
Kernel::g_current_process = Kernel::Process::Create("main");
Kernel::g_current_process->LoadModule(codeset, codeset->entrypoint);
Kernel::g_current_process->svc_access_mask.set();
Kernel::g_current_process->address_mappings = default_address_mappings;
@ -275,7 +276,7 @@ ResultStatus AppLoader_THREEDSX::Load() {
Kernel::g_current_process->resource_limit =
Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
Kernel::g_current_process->Run(48, Kernel::DEFAULT_STACK_SIZE);
Kernel::g_current_process->Run(codeset->entrypoint, 48, Kernel::DEFAULT_STACK_SIZE);
Service::FS::RegisterArchiveType(std::make_unique<FileSys::ArchiveFactory_SelfNCCH>(*this),
Service::FS::ArchiveIdCode::SelfNCCH);

5
src/core/loader/elf.cpp
View File

@ -401,7 +401,8 @@ ResultStatus AppLoader_ELF::Load() {
SharedPtr<CodeSet> codeset = elf_reader.LoadInto(Memory::PROCESS_IMAGE_VADDR);
codeset->name = filename;
Kernel::g_current_process = Kernel::Process::Create(std::move(codeset));
Kernel::g_current_process = Kernel::Process::Create("main");
Kernel::g_current_process->LoadModule(codeset, codeset->entrypoint);
Kernel::g_current_process->svc_access_mask.set();
Kernel::g_current_process->address_mappings = default_address_mappings;
@ -409,7 +410,7 @@ ResultStatus AppLoader_ELF::Load() {
Kernel::g_current_process->resource_limit =
Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
Kernel::g_current_process->Run(48, Kernel::DEFAULT_STACK_SIZE);
Kernel::g_current_process->Run(codeset->entrypoint, 48, Kernel::DEFAULT_STACK_SIZE);
is_loaded = true;
return ResultStatus::Success;

5
src/core/loader/ncch.cpp
View File

@ -168,7 +168,8 @@ ResultStatus AppLoader_NCCH::LoadExec() {
codeset->entrypoint = codeset->code.addr;
codeset->memory = std::make_shared<std::vector<u8>>(std::move(code));
Kernel::g_current_process = Kernel::Process::Create(std::move(codeset));
Kernel::g_current_process = Kernel::Process::Create("main");
Kernel::g_current_process->LoadModule(codeset, codeset->entrypoint);
// Attach a resource limit to the process based on the resource limit category
Kernel::g_current_process->resource_limit =
@ -187,7 +188,7 @@ ResultStatus AppLoader_NCCH::LoadExec() {
s32 priority = exheader_header.arm11_system_local_caps.priority;
u32 stack_size = exheader_header.codeset_info.stack_size;
Kernel::g_current_process->Run(priority, stack_size);
Kernel::g_current_process->Run(codeset->entrypoint, priority, stack_size);
return ResultStatus::Success;
}
return ResultStatus::Error;

223
src/core/loader/nso.cpp
View File

@ -2,8 +2,6 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <map>
#include <string>
#include <vector>
#include <lz4.h>
@ -14,22 +12,20 @@
#include "core/loader/nso.h"
#include "core/memory.h"
using Kernel::CodeSet;
using Kernel::SharedPtr;
namespace Loader {
FileType AppLoader_NSO::IdentifyType(FileUtil::IOFile& file) {
u32 magic = 0;
file.Seek(0, SEEK_SET);
if (1 != file.ReadArray<u32>(&magic, 1))
return FileType::Error;
enum class RelocationType : u32 { ABS64 = 257, GLOB_DAT = 1025, JUMP_SLOT = 1026, RELATIVE = 1027 };
if (MakeMagic('N', 'S', 'O', '0') == magic)
return FileType::NSO;
return FileType::Error;
}
enum DynamicType : u32 {
DT_NULL = 0,
DT_PLTRELSZ = 2,
DT_STRTAB = 5,
DT_SYMTAB = 6,
DT_RELA = 7,
DT_RELASZ = 8,
DT_STRSZ = 10,
DT_JMPREL = 23,
};
struct NsoSegmentHeader {
u32_le offset;
@ -42,13 +38,40 @@ static_assert(sizeof(NsoSegmentHeader) == 0x10, "NsoSegmentHeader has incorrect
struct NsoHeader {
u32_le magic;
INSERT_PADDING_BYTES(0xc);
std::array<NsoSegmentHeader, 3> segments; // Text, Data, RoData (in that order)
INSERT_PADDING_BYTES(0x20);
std::array<NsoSegmentHeader, 3> segments; // Text, RoData, Data (in that order)
u32_le bss_size;
INSERT_PADDING_BYTES(0x1c);
std::array<u32_le, 3> segments_compressed_size;
};
static_assert(sizeof(NsoHeader) == 0x6c, "NsoHeader has incorrect size.");
struct ModHeader {
INSERT_PADDING_BYTES(0x4);
u32_le offset_to_start; // Always 8
u32_le magic;
u32_le dynamic_offset;
u32_le bss_start_offset;
u32_le bss_end_offset;
u32_le eh_frame_hdr_start_offset;
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) == 0x24, "ModHeader has incorrect size.");
FileType AppLoader_NSO::IdentifyType(FileUtil::IOFile& file) {
u32 magic = 0;
file.Seek(0, SEEK_SET);
if (1 != file.ReadArray<u32>(&magic, 1)) {
return FileType::Error;
}
if (MakeMagic('N', 'S', 'O', '0') == magic) {
return FileType::NSO;
}
return FileType::Error;
}
static std::vector<u8> ReadSegment(FileUtil::IOFile& file, const NsoSegmentHeader& header,
int compressed_size) {
std::vector<u8> compressed_data;
@ -72,40 +95,10 @@ static std::vector<u8> ReadSegment(FileUtil::IOFile& file, const NsoSegmentHeade
return uncompressed_data;
}
struct Symbol {
Symbol(std::string&& name, u64 value) : name(std::move(name)), value(value) {}
std::string name;
u64 value;
};
struct Import {
VAddr ea;
s64 addend;
};
enum class RelocationType : u32 {
ABS64 = 257,
GLOB_DAT = 1025,
JUMP_SLOT = 1026,
RELATIVE = 1027
};
enum DynamicType : u32 {
DT_NULL = 0,
DT_PLTRELSZ = 2,
DT_STRTAB = 5,
DT_SYMTAB = 6,
DT_RELA = 7,
DT_RELASZ = 8,
DT_STRSZ = 10,
DT_JMPREL = 23,
};
void WriteRelocations(const std::vector<Symbol>& symbols, VAddr loadbase, u64 roff, u64 size,
bool is_jump_relocation, std::map<std::string, Import>& imports,
std::map<std::string, VAddr>& exports) {
void AppLoader_NSO::WriteRelocations(const std::vector<Symbol>& symbols, VAddr load_base,
u64 relocation_offset, u64 size, bool is_jump_relocation) {
for (u64 i = 0; i < size; i += 0x18) {
VAddr addr = loadbase + roff + i;
VAddr addr = load_base + relocation_offset + i;
u64 offset = Memory::Read64(addr);
u64 info = Memory::Read64(addr + 8);
u64 addend_unsigned = Memory::Read64(addr + 16);
@ -114,16 +107,16 @@ void WriteRelocations(const std::vector<Symbol>& symbols, VAddr loadbase, u64 ro
RelocationType rtype = static_cast<RelocationType>(info & 0xFFFFFFFF);
u32 rsym = static_cast<u32>(info >> 32);
VAddr ea = loadbase + offset;
VAddr ea = load_base + offset;
const Symbol& symbol = symbols[rsym];
switch (rtype) {
case RelocationType::RELATIVE:
if (!symbol.name.empty()) {
exports[symbol.name] = loadbase + addend;
exports[symbol.name] = load_base + addend;
}
Memory::Write64(ea, loadbase + addend);
Memory::Write64(ea, load_base + addend);
break;
case RelocationType::JUMP_SLOT:
case RelocationType::GLOB_DAT:
@ -149,18 +142,12 @@ void WriteRelocations(const std::vector<Symbol>& symbols, VAddr loadbase, u64 ro
}
}
void Relocate(VAddr loadbase, std::map<std::string, Import>& imports,
std::map<std::string, VAddr>& exports) {
u32 modoff = Memory::Read32(loadbase + 4);
ASSERT_MSG(Memory::Read32(loadbase + modoff) == MakeMagic('M', 'O', 'D', '0'),
"Expected MOD section");
u64 dynoff = loadbase + modoff + Memory::Read32(loadbase + modoff + 4);
void AppLoader_NSO::Relocate(VAddr load_base, VAddr dynamic_section_addr) {
std::map<u64, u64> dynamic;
while (1) {
u64 tag = Memory::Read64(dynoff);
u64 value = Memory::Read64(dynoff + 8);
dynoff += 16;
u64 tag = Memory::Read64(dynamic_section_addr);
u64 value = Memory::Read64(dynamic_section_addr + 8);
dynamic_section_addr += 16;
if (tag == DT_NULL) {
break;
@ -171,9 +158,9 @@ void Relocate(VAddr loadbase, std::map<std::string, Import>& imports,
u64 strtabsize = dynamic[DT_STRSZ];
std::vector<u8> strtab;
strtab.resize(strtabsize);
Memory::ReadBlock(loadbase + dynamic[DT_STRTAB], strtab.data(), strtabsize);
Memory::ReadBlock(load_base + dynamic[DT_STRTAB], strtab.data(), strtabsize);
VAddr addr = loadbase + dynamic[DT_SYMTAB];
VAddr addr = load_base + dynamic[DT_SYMTAB];
std::vector<Symbol> symbols;
while (1) {
const u32 stname = Memory::Read32(addr);
@ -187,96 +174,108 @@ void Relocate(VAddr loadbase, std::map<std::string, Import>& imports,
std::string name = reinterpret_cast<char*>(&strtab[stname]);
if (stvalue) {
exports[name] = loadbase + stvalue;
symbols.emplace_back(std::move(name), loadbase + stvalue);
exports[name] = load_base + stvalue;
symbols.emplace_back(std::move(name), load_base + stvalue);
} else {
symbols.emplace_back(std::move(name), 0);
}
}
if (dynamic.find(DT_RELA) != dynamic.end()) {
WriteRelocations(symbols, loadbase, dynamic[DT_RELA], dynamic[DT_RELASZ], false, imports,
exports);
WriteRelocations(symbols, load_base, dynamic[DT_RELA], dynamic[DT_RELASZ], false);
}
if (dynamic.find(DT_JMPREL) != dynamic.end()) {
WriteRelocations(symbols, loadbase, dynamic[DT_JMPREL], dynamic[DT_PLTRELSZ], true, imports,
exports);
WriteRelocations(symbols, load_base, dynamic[DT_JMPREL], dynamic[DT_PLTRELSZ], true);
}
}
static VAddr GetEntryPoint(const std::map<std::string, VAddr>& exports) {
VAddr AppLoader_NSO::GetEntryPoint() const {
// Find nnMain function, set entrypoint to that address
const auto& search = exports.find("nnMain");
if (search != exports.end()) {
return search->second;
}
ASSERT_MSG(false, "Unable to find entrypoint");
return {};
}
static SharedPtr<CodeSet> LoadModule(const std::string& filepath, VAddr loadbase,
std::map<std::string, Import>& imports,
std::map<std::string, VAddr>& exports) {
FileUtil::IOFile file(filepath, "rb");
static constexpr u32 PageAlignSize(u32 size) {
return (size + Memory::PAGE_MASK) & ~Memory::PAGE_MASK;
}
if (!file.IsOpen())
bool AppLoader_NSO::LoadNso(const std::string& path, VAddr load_base) {
FileUtil::IOFile file(path, "rb");
if (!file.IsOpen()) {
return {};
}
NsoHeader header{};
// Read NSO header
NsoHeader nso_header{};
file.Seek(0, SEEK_SET);
if (sizeof(NsoHeader) != file.ReadBytes(&header, sizeof(NsoHeader)))
if (sizeof(NsoHeader) != file.ReadBytes(&nso_header, sizeof(NsoHeader))) {
return {};
}
if (nso_header.magic != MakeMagic('N', 'S', 'O', '0')) {
return {};
}
// Build program image
SharedPtr<CodeSet> codeset = CodeSet::Create("", 0);
Kernel::SharedPtr<Kernel::CodeSet> codeset = Kernel::CodeSet::Create("", 0);
std::vector<u8> program_image;
for (int i = 0; i < header.segments.size(); ++i) {
for (int i = 0; i < nso_header.segments.size(); ++i) {
std::vector<u8> data =
ReadSegment(file, header.segments[i], header.segments_compressed_size[i]);
program_image.resize(header.segments[i].location);
ReadSegment(file, nso_header.segments[i], nso_header.segments_compressed_size[i]);
program_image.resize(nso_header.segments[i].location);
program_image.insert(program_image.end(), data.begin(), data.end());
codeset->segments[i].addr = header.segments[i].location;
codeset->segments[i].offset = header.segments[i].location;
codeset->segments[i].size = (data.size() + Memory::PAGE_MASK) & ~Memory::PAGE_MASK;
codeset->segments[i].addr = nso_header.segments[i].location;
codeset->segments[i].offset = nso_header.segments[i].location;
codeset->segments[i].size = static_cast<u32>(data.size());
}
program_image.resize((program_image.size() + Memory::PAGE_MASK) & ~Memory::PAGE_MASK);
codeset->name = filepath;
codeset->entrypoint = 0; // Set after relocation
// Read MOD header
ModHeader mod_header{};
std::memcpy(&mod_header, program_image.data(), sizeof(ModHeader));
if (mod_header.magic != MakeMagic('M', 'O', 'D', '0')) {
return {};
}
// Resize program image to include .bss section and page align each section
const u32 bss_size = mod_header.bss_end_offset - mod_header.bss_start_offset;
codeset->code.size = PageAlignSize(codeset->code.size);
codeset->rodata.size = PageAlignSize(codeset->rodata.size);
codeset->data.size = PageAlignSize(codeset->data.size + bss_size);
program_image.resize(PageAlignSize(static_cast<u32>(program_image.size()) + bss_size));
// Load codeset for current process
codeset->name = path;
codeset->memory = std::make_shared<std::vector<u8>>(std::move(program_image));
Kernel::g_current_process->LoadModule(codeset, load_base);
Relocate(load_base, load_base + mod_header.offset_to_start + mod_header.dynamic_offset);
return codeset;
return true;
}
ResultStatus AppLoader_NSO::Load() {
if (is_loaded)
if (is_loaded) {
return ResultStatus::ErrorAlreadyLoaded;
if (!file.IsOpen())
}
if (!file.IsOpen()) {
return ResultStatus::Error;
}
static constexpr VAddr loadbase = 0x7100000000;
std::map<std::string, Import> imports;
std::map<std::string, VAddr> exports;
// Load and relocate "main" and "sdk" NSO
const std::string sdkpath = filepath.substr(0, filepath.find_last_of("/\\")) + "/sdk";
Kernel::g_current_process = Kernel::Process::Create("main");
if (!LoadNso(filepath, 0x10000000) || !LoadNso(sdkpath, 0x20000000)) {
return ResultStatus::ErrorInvalidFormat;
}
// Load and relocate "main" NSO
auto codeset = LoadModule(filepath, loadbase, imports, exports);
Kernel::g_current_process = Kernel::Process::Create(codeset);
Kernel::g_current_process->svc_access_mask.set();
Kernel::g_current_process->address_mappings = default_address_mappings;
Kernel::g_current_process->resource_limit =
Kernel::ResourceLimit::GetForCategory(Kernel::ResourceLimitCategory::APPLICATION);
Kernel::g_current_process->LoadModule(codeset, loadbase);
Relocate(loadbase, imports, exports);
codeset->entrypoint = GetEntryPoint(exports);
Kernel::g_current_process->Run(48, Kernel::DEFAULT_STACK_SIZE);
// Load and relocate "sdk" NSO
static constexpr VAddr sdkbase = 0x7200000000;
const std::string sdkpath = filepath.substr(0, filepath.find_last_of("/\\")) + "/sdk";
auto sdk_codeset = LoadModule(sdkpath, sdkbase, imports, exports);
Kernel::g_current_process->LoadModule(sdk_codeset, sdkbase);
Relocate(sdkbase, imports, exports);
Kernel::g_current_process->Run(GetEntryPoint(), 48, Kernel::DEFAULT_STACK_SIZE);
// Resolve imports
for (const auto& import : imports) {
@ -284,7 +283,7 @@ ResultStatus AppLoader_NSO::Load() {
if (search != exports.end()) {
Memory::Write64(import.second.ea, search->second + import.second.addend);
} else {
LOG_CRITICAL(Loader, "Unresolved import: %s", import.first.c_str());
LOG_ERROR(Loader, "Unresolved import: %s", import.first.c_str());
}
}

25
src/core/loader/nso.h
View File

@ -4,9 +4,11 @@
#pragma once
#include <map>
#include <string>
#include "common/common_types.h"
#include "common/file_util.h"
#include "core/hle/kernel/kernel.h"
#include "core/loader/loader.h"
namespace Loader {
@ -15,7 +17,8 @@ namespace Loader {
class AppLoader_NSO final : public AppLoader {
public:
AppLoader_NSO(FileUtil::IOFile&& file, std::string filename, std::string filepath)
: AppLoader(std::move(file)), filename(std::move(filename)), filepath(std::move(filepath)) {}
: AppLoader(std::move(file)), filename(std::move(filename)), filepath(std::move(filepath)) {
}
/**
* Returns the type of the file
@ -31,6 +34,26 @@ public:
ResultStatus Load() override;
private:
struct Symbol {
Symbol(std::string&& name, u64 value) : name(std::move(name)), value(value) {}
std::string name;
u64 value;
};
struct Import {
VAddr ea;
s64 addend;
};
void WriteRelocations(const std::vector<Symbol>& symbols, VAddr load_base,
u64 relocation_offset, u64 size, bool is_jump_relocation);
VAddr GetEntryPoint() const;
bool LoadNso(const std::string& path, VAddr load_base);
void Relocate(VAddr load_base, VAddr dynamic_section_addr);
std::map<std::string, Import> imports;
std::map<std::string, VAddr> exports;
std::string filename;
std::string filepath;
};

4
src/tests/core/hle/kernel/hle_ipc.cpp
View File

@ -22,7 +22,7 @@ TEST_CASE("HLERequestContext::PopulateFromIncomingCommandBuffer", "[core][kernel
auto session = std::get<SharedPtr<ServerSession>>(ServerSession::CreateSessionPair());
HLERequestContext context(std::move(session));
auto process = Process::Create(CodeSet::Create("", 0));
auto process = Process::Create("");
HandleTable handle_table;
SECTION("works with empty cmdbuf") {
@ -142,7 +142,7 @@ TEST_CASE("HLERequestContext::WriteToOutgoingCommandBuffer", "[core][kernel]") {
auto session = std::get<SharedPtr<ServerSession>>(ServerSession::CreateSessionPair());
HLERequestContext context(std::move(session));
auto process = Process::Create(CodeSet::Create("", 0));
auto process = Process::Create("");
HandleTable handle_table;
auto* input = context.CommandBuffer();
u32_le output[IPC::COMMAND_BUFFER_LENGTH];