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kernel: Manually specify aslr region start

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This commit is contained in:
Liam 2023-11-17 21:58:29 +02:00 committed by t895
parent 5938a9582a
commit f2a8409083
8 changed files with 25 additions and 18 deletions
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6
src/core/hle/kernel/k_page_table_base.cpp
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@ -184,7 +184,8 @@ Result KPageTableBase::InitializeForProcess(Svc::CreateProcessFlag as_type, bool
KMemoryManager::Pool pool, KProcessAddress code_address,
size_t code_size, KSystemResource* system_resource,
KResourceLimit* resource_limit,
Core::Memory::Memory& memory) {
Core::Memory::Memory& memory,
KProcessAddress aslr_space_start) {
// Calculate region extents.
const size_t as_width = GetAddressSpaceWidth(as_type);
const KProcessAddress start = 0;
@ -225,7 +226,8 @@ Result KPageTableBase::InitializeForProcess(Svc::CreateProcessFlag as_type, bool
heap_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Heap);
stack_region_size = GetSpaceSize(KAddressSpaceInfo::Type::Stack);
kernel_map_region_size = GetSpaceSize(KAddressSpaceInfo::Type::MapSmall);
m_code_region_start = GetSpaceStart(KAddressSpaceInfo::Type::Map39Bit);
m_code_region_start = m_address_space_start + aslr_space_start +
GetSpaceStart(KAddressSpaceInfo::Type::Map39Bit);
m_code_region_end = m_code_region_start + GetSpaceSize(KAddressSpaceInfo::Type::Map39Bit);
m_alias_code_region_start = m_code_region_start;
m_alias_code_region_end = m_code_region_end;

3
src/core/hle/kernel/k_page_table_base.h
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@ -235,7 +235,8 @@ public:
bool enable_device_address_space_merge, bool from_back,
KMemoryManager::Pool pool, KProcessAddress code_address,
size_t code_size, KSystemResource* system_resource,
KResourceLimit* resource_limit, Core::Memory::Memory& memory);
KResourceLimit* resource_limit, Core::Memory::Memory& memory,
KProcessAddress aslr_space_start);
void Finalize();

12
src/core/hle/kernel/k_process.cpp
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@ -300,7 +300,7 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params, const KPa
False(params.flags & Svc::CreateProcessFlag::DisableDeviceAddressSpaceMerge);
R_TRY(m_page_table.Initialize(as_type, enable_aslr, enable_das_merge, !enable_aslr, pool,
params.code_address, params.code_num_pages * PageSize,
m_system_resource, res_limit, this->GetMemory()));
m_system_resource, res_limit, this->GetMemory(), 0));
}
ON_RESULT_FAILURE_2 {
m_page_table.Finalize();
@ -332,7 +332,7 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params, const KPa
Result KProcess::Initialize(const Svc::CreateProcessParameter& params,
std::span<const u32> user_caps, KResourceLimit* res_limit,
KMemoryManager::Pool pool) {
KMemoryManager::Pool pool, KProcessAddress aslr_space_start) {
ASSERT(res_limit != nullptr);
// Set members.
@ -393,7 +393,7 @@ Result KProcess::Initialize(const Svc::CreateProcessParameter& params,
False(params.flags & Svc::CreateProcessFlag::DisableDeviceAddressSpaceMerge);
R_TRY(m_page_table.Initialize(as_type, enable_aslr, enable_das_merge, !enable_aslr, pool,
params.code_address, code_size, m_system_resource, res_limit,
this->GetMemory()));
this->GetMemory(), aslr_space_start));
}
ON_RESULT_FAILURE_2 {
m_page_table.Finalize();
@ -1128,7 +1128,7 @@ KProcess::KProcess(KernelCore& kernel)
KProcess::~KProcess() = default;
Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std::size_t code_size,
bool is_hbl) {
KProcessAddress aslr_space_start, bool is_hbl) {
// Create a resource limit for the process.
const auto physical_memory_size =
m_kernel.MemoryManager().GetSize(Kernel::KMemoryManager::Pool::Application);
@ -1179,7 +1179,7 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
.name = {},
.version = {},
.program_id = metadata.GetTitleID(),
.code_address = code_address,
.code_address = code_address + GetInteger(aslr_space_start),
.code_num_pages = static_cast<s32>(code_size / PageSize),
.flags = flag,
.reslimit = Svc::InvalidHandle,
@ -1193,7 +1193,7 @@ Result KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std:
// Initialize for application process.
R_TRY(this->Initialize(params, metadata.GetKernelCapabilities(), res_limit,
KMemoryManager::Pool::Application));
KMemoryManager::Pool::Application, aslr_space_start));
// Assign remaining properties.
m_is_hbl = is_hbl;

5
src/core/hle/kernel/k_process.h
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@ -150,7 +150,8 @@ public:
std::span<const u32> caps, KResourceLimit* res_limit,
KMemoryManager::Pool pool, bool immortal);
Result Initialize(const Svc::CreateProcessParameter& params, std::span<const u32> user_caps,
KResourceLimit* res_limit, KMemoryManager::Pool pool);
KResourceLimit* res_limit, KMemoryManager::Pool pool,
KProcessAddress aslr_space_start);
void Exit();
const char* GetName() const {
@ -479,7 +480,7 @@ public:
public:
Result LoadFromMetadata(const FileSys::ProgramMetadata& metadata, std::size_t code_size,
bool is_hbl);
KProcessAddress aslr_space_start, bool is_hbl);
void LoadModule(CodeSet code_set, KProcessAddress base_addr);

9
src/core/hle/kernel/k_process_page_table.h
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@ -23,10 +23,11 @@ public:
Result Initialize(Svc::CreateProcessFlag as_type, bool enable_aslr, bool enable_das_merge,
bool from_back, KMemoryManager::Pool pool, KProcessAddress code_address,
size_t code_size, KSystemResource* system_resource,
KResourceLimit* resource_limit, Core::Memory::Memory& memory) {
R_RETURN(m_page_table.InitializeForProcess(as_type, enable_aslr, enable_das_merge,
from_back, pool, code_address, code_size,
system_resource, resource_limit, memory));
KResourceLimit* resource_limit, Core::Memory::Memory& memory,
KProcessAddress aslr_space_start) {
R_RETURN(m_page_table.InitializeForProcess(
as_type, enable_aslr, enable_das_merge, from_back, pool, code_address, code_size,
system_resource, resource_limit, memory, aslr_space_start));
}
void Finalize() {

2
src/core/loader/deconstructed_rom_directory.cpp
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@ -147,7 +147,7 @@ AppLoader_DeconstructedRomDirectory::LoadResult AppLoader_DeconstructedRomDirect
}
// Setup the process code layout
if (process.LoadFromMetadata(metadata, code_size, is_hbl).IsError()) {
if (process.LoadFromMetadata(metadata, code_size, 0, is_hbl).IsError()) {
return {ResultStatus::ErrorUnableToParseKernelMetadata, {}};
}

3
src/core/loader/kip.cpp
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@ -91,7 +91,8 @@ AppLoader::LoadResult AppLoader_KIP::Load(Kernel::KProcess& process,
// Setup the process code layout
if (process
.LoadFromMetadata(FileSys::ProgramMetadata::GetDefault(), program_image.size(), false)
.LoadFromMetadata(FileSys::ProgramMetadata::GetDefault(), program_image.size(), 0,
false)
.IsError()) {
return {ResultStatus::ErrorNotInitialized, {}};
}

3
src/core/loader/nro.cpp
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@ -197,7 +197,8 @@ static bool LoadNroImpl(Kernel::KProcess& process, const std::vector<u8>& data)
// Setup the process code layout
if (process
.LoadFromMetadata(FileSys::ProgramMetadata::GetDefault(), program_image.size(), false)
.LoadFromMetadata(FileSys::ProgramMetadata::GetDefault(), program_image.size(), 0,
false)
.IsError()) {
return false;
}