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hle: kernel: Improve MapSharedMemory and implement UnmapSharedMemory.

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This commit is contained in:
bunnei
2021-04-30 14:53:22 -07:00
parent 2a7eff57a8
commit 0b27c721c9
10 changed files with 222 additions and 107 deletions
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4
src/core/hle/kernel/k_memory_block.h
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@@ -134,6 +134,10 @@ enum class KMemoryPermission : u8 {
};
DECLARE_ENUM_FLAG_OPERATORS(KMemoryPermission);
constexpr KMemoryPermission ConvertToKMemoryPermission(Svc::MemoryPermission perm) {
return static_cast<KMemoryPermission>(perm);
}
enum class KMemoryAttribute : u8 {
None = 0x00,
Mask = 0x7F,

39
src/core/hle/kernel/k_page_table.cpp
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@@ -641,6 +641,45 @@ ResultCode KPageTable::MapPages(VAddr addr, KPageLinkedList& page_linked_list, K
return RESULT_SUCCESS;
}
ResultCode KPageTable::UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list) {
VAddr cur_addr{addr};
for (const auto& node : page_linked_list.Nodes()) {
const std::size_t num_pages{(addr - cur_addr) / PageSize};
if (const auto result{
Operate(addr, num_pages, KMemoryPermission::None, OperationType::Unmap)};
result.IsError()) {
return result;
}
cur_addr += node.GetNumPages() * PageSize;
}
return RESULT_SUCCESS;
}
ResultCode KPageTable::UnmapPages(VAddr addr, KPageLinkedList& page_linked_list,
KMemoryState state) {
std::lock_guard lock{page_table_lock};
const std::size_t num_pages{page_linked_list.GetNumPages()};
const std::size_t size{num_pages * PageSize};
if (!CanContain(addr, size, state)) {
return ResultInvalidCurrentMemory;
}
if (IsRegionMapped(addr, num_pages * PageSize)) {
return ResultInvalidCurrentMemory;
}
CASCADE_CODE(UnmapPages(addr, page_linked_list));
block_manager->Update(addr, num_pages, state, KMemoryPermission::None);
return RESULT_SUCCESS;
}
ResultCode KPageTable::SetCodeMemoryPermission(VAddr addr, std::size_t size,
KMemoryPermission perm) {

5
src/core/hle/kernel/k_page_table.h
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@@ -40,6 +40,7 @@ public:
ResultCode Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size);
ResultCode MapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state,
KMemoryPermission perm);
ResultCode UnmapPages(VAddr addr, KPageLinkedList& page_linked_list, KMemoryState state);
ResultCode SetCodeMemoryPermission(VAddr addr, std::size_t size, KMemoryPermission perm);
KMemoryInfo QueryInfo(VAddr addr);
ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
@@ -63,6 +64,8 @@ public:
return page_table_impl;
}
constexpr bool CanContain(VAddr addr, std::size_t size, KMemoryState state) const;
private:
enum class OperationType : u32 {
Map,
@@ -79,6 +82,7 @@ private:
ResultCode InitializeMemoryLayout(VAddr start, VAddr end);
ResultCode MapPages(VAddr addr, const KPageLinkedList& page_linked_list,
KMemoryPermission perm);
ResultCode UnmapPages(VAddr addr, const KPageLinkedList& page_linked_list);
void MapPhysicalMemory(KPageLinkedList& page_linked_list, VAddr start, VAddr end);
bool IsRegionMapped(VAddr address, u64 size);
bool IsRegionContiguous(VAddr addr, u64 size) const;
@@ -92,7 +96,6 @@ private:
OperationType operation, PAddr map_addr = 0);
constexpr VAddr GetRegionAddress(KMemoryState state) const;
constexpr std::size_t GetRegionSize(KMemoryState state) const;
constexpr bool CanContain(VAddr addr, std::size_t size, KMemoryState state) const;
constexpr ResultCode CheckMemoryState(const KMemoryInfo& info, KMemoryState state_mask,
KMemoryState state, KMemoryPermission perm_mask,

25
src/core/hle/kernel/k_process.cpp
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@@ -21,6 +21,7 @@
#include "core/hle/kernel/k_resource_limit.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_scoped_resource_reservation.h"
#include "core/hle/kernel/k_shared_memory.h"
#include "core/hle/kernel/k_slab_heap.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
@@ -247,6 +248,30 @@ void KProcess::UnpinCurrentThread() {
KScheduler::SetSchedulerUpdateNeeded(kernel);
}
ResultCode KProcess::AddSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr address,
[[maybe_unused]] size_t size) {
// Lock ourselves, to prevent concurrent access.
KScopedLightLock lk(state_lock);
// TODO(bunnei): Manage KSharedMemoryInfo list here.
// Open a reference to the shared memory.
shmem->Open();
return RESULT_SUCCESS;
}
void KProcess::RemoveSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr address,
[[maybe_unused]] size_t size) {
// Lock ourselves, to prevent concurrent access.
KScopedLightLock lk(state_lock);
// TODO(bunnei): Manage KSharedMemoryInfo list here.
// Close a reference to the shared memory.
shmem->Close();
}
void KProcess::RegisterThread(const KThread* thread) {
thread_list.push_back(thread);
}

3
src/core/hle/kernel/k_process.h
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@@ -352,6 +352,9 @@ public:
return state_lock;
}
ResultCode AddSharedMemory(KSharedMemory* shmem, VAddr address, size_t size);
void RemoveSharedMemory(KSharedMemory* shmem, VAddr address, size_t size);
///////////////////////////////////////////////////////////////////////////////////////////////
// Thread-local storage management

31
src/core/hle/kernel/k_shared_memory.cpp
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@@ -20,9 +20,10 @@ KSharedMemory::~KSharedMemory() {
ResultCode KSharedMemory::Initialize(KernelCore& kernel_, Core::DeviceMemory& device_memory_,
KProcess* owner_process_, KPageLinkedList&& page_list_,
KMemoryPermission owner_permission_,
KMemoryPermission user_permission_, PAddr physical_address_,
std::size_t size_, std::string name_) {
Svc::MemoryPermission owner_permission_,
Svc::MemoryPermission user_permission_,
PAddr physical_address_, std::size_t size_,
std::string name_) {
// Set members.
owner_process = owner_process_;
device_memory = &device_memory_;
@@ -58,14 +59,6 @@ ResultCode KSharedMemory::Initialize(KernelCore& kernel_, Core::DeviceMemory& de
}
void KSharedMemory::Finalize() {
///* Get the number of pages. */
// const size_t num_pages = m_page_group.GetNumPages();
// const size_t size = num_pages * PageSize;
///* Close and finalize the page group. */
// m_page_group.Close();
// m_page_group.Finalize();
// Release the memory reservation.
resource_limit->Release(LimitableResource::PhysicalMemory, size);
resource_limit->Close();
@@ -75,14 +68,14 @@ void KSharedMemory::Finalize() {
}
ResultCode KSharedMemory::Map(KProcess& target_process, VAddr address, std::size_t size,
KMemoryPermission permissions) {
Svc::MemoryPermission permissions) {
const u64 page_count{(size + PageSize - 1) / PageSize};
if (page_list.GetNumPages() != page_count) {
UNIMPLEMENTED_MSG("Page count does not match");
}
const KMemoryPermission expected =
const Svc::MemoryPermission expected =
&target_process == owner_process ? owner_permission : user_permission;
if (permissions != expected) {
@@ -90,7 +83,17 @@ ResultCode KSharedMemory::Map(KProcess& target_process, VAddr address, std::size
}
return target_process.PageTable().MapPages(address, page_list, KMemoryState::Shared,
permissions);
ConvertToKMemoryPermission(permissions));
}
ResultCode KSharedMemory::Unmap(KProcess& target_process, VAddr address, std::size_t size) {
const u64 page_count{(size + PageSize - 1) / PageSize};
if (page_list.GetNumPages() != page_count) {
UNIMPLEMENTED_MSG("Page count does not match");
}
return target_process.PageTable().UnmapPages(address, page_list, KMemoryState::Shared);
}
} // namespace Kernel

19
src/core/hle/kernel/k_shared_memory.h
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@@ -29,8 +29,9 @@ public:
ResultCode Initialize(KernelCore& kernel_, Core::DeviceMemory& device_memory_,
KProcess* owner_process_, KPageLinkedList&& page_list_,
KMemoryPermission owner_permission_, KMemoryPermission user_permission_,
PAddr physical_address_, std::size_t size_, std::string name_);
Svc::MemoryPermission owner_permission_,
Svc::MemoryPermission user_permission_, PAddr physical_address_,
std::size_t size_, std::string name_);
/**
* Maps a shared memory block to an address in the target process' address space
@@ -40,7 +41,15 @@ public:
* @param permissions Memory block map permissions (specified by SVC field)
*/
ResultCode Map(KProcess& target_process, VAddr address, std::size_t size,
KMemoryPermission permissions);
Svc::MemoryPermission permissions);
/**
* Unmaps a shared memory block from an address in the target process' address space
* @param target_process Process on which to unmap the memory block
* @param address Address in system memory to unmap shared memory block
* @param size Size of the shared memory block to unmap
*/
ResultCode Unmap(KProcess& target_process, VAddr address, std::size_t size);
/**
* Gets a pointer to the shared memory block
@@ -71,8 +80,8 @@ private:
Core::DeviceMemory* device_memory;
KProcess* owner_process{};
KPageLinkedList page_list;
KMemoryPermission owner_permission{};
KMemoryPermission user_permission{};
Svc::MemoryPermission owner_permission{};
Svc::MemoryPermission user_permission{};
PAddr physical_address{};
std::size_t size{};
KResourceLimit* resource_limit{};

24
src/core/hle/kernel/kernel.cpp
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@@ -599,21 +599,21 @@ struct KernelCore::Impl {
time_shared_mem = KSharedMemory::Create(system.Kernel());
hid_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
{hid_phys_addr, hid_size / PageSize}, KMemoryPermission::None,
KMemoryPermission::Read, hid_phys_addr, hid_size,
"HID:SharedMemory");
{hid_phys_addr, hid_size / PageSize},
Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
hid_phys_addr, hid_size, "HID:SharedMemory");
font_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
{font_phys_addr, font_size / PageSize}, KMemoryPermission::None,
KMemoryPermission::Read, font_phys_addr, font_size,
"Font:SharedMemory");
{font_phys_addr, font_size / PageSize},
Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
font_phys_addr, font_size, "Font:SharedMemory");
irs_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
{irs_phys_addr, irs_size / PageSize}, KMemoryPermission::None,
KMemoryPermission::Read, irs_phys_addr, irs_size,
"IRS:SharedMemory");
{irs_phys_addr, irs_size / PageSize},
Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
irs_phys_addr, irs_size, "IRS:SharedMemory");
time_shared_mem->Initialize(system.Kernel(), system.DeviceMemory(), nullptr,
{time_phys_addr, time_size / PageSize}, KMemoryPermission::None,
KMemoryPermission::Read, time_phys_addr, time_size,
"Time:SharedMemory");
{time_phys_addr, time_size / PageSize},
Svc::MemoryPermission::None, Svc::MemoryPermission::Read,
time_phys_addr, time_size, "Time:SharedMemory");
}
void InitializePageSlab() {

162
src/core/hle/kernel/svc.cpp
View File

@@ -1183,79 +1183,97 @@ static u32 GetCurrentProcessorNumber32(Core::System& system) {
return GetCurrentProcessorNumber(system);
}
static ResultCode MapSharedMemory(Core::System& system, Handle shared_memory_handle, VAddr addr,
u64 size, u32 permissions) {
std::lock_guard lock{HLE::g_hle_lock};
LOG_TRACE(Kernel_SVC,
"called, shared_memory_handle=0x{:X}, addr=0x{:X}, size=0x{:X}, permissions=0x{:08X}",
shared_memory_handle, addr, size, permissions);
if (!Common::Is4KBAligned(addr)) {
LOG_ERROR(Kernel_SVC, "Address is not aligned to 4KB, addr=0x{:016X}", addr);
return ResultInvalidAddress;
constexpr bool IsValidSharedMemoryPermission(Svc::MemoryPermission perm) {
switch (perm) {
case Svc::MemoryPermission::Read:
case Svc::MemoryPermission::ReadWrite:
return true;
default:
return false;
}
if (size == 0) {
LOG_ERROR(Kernel_SVC, "Size is 0");
return ResultInvalidSize;
}
if (!Common::Is4KBAligned(size)) {
LOG_ERROR(Kernel_SVC, "Size is not aligned to 4KB, size=0x{:016X}", size);
return ResultInvalidSize;
}
if (!IsValidAddressRange(addr, size)) {
LOG_ERROR(Kernel_SVC, "Region is not a valid address range, addr=0x{:016X}, size=0x{:016X}",
addr, size);
return ResultInvalidCurrentMemory;
}
const auto permission_type = static_cast<MemoryPermission>(permissions);
if ((permission_type | MemoryPermission::Write) != MemoryPermission::ReadWrite) {
LOG_ERROR(Kernel_SVC, "Expected Read or ReadWrite permission but got permissions=0x{:08X}",
permissions);
return ResultInvalidNewMemoryPermission;
}
auto* const current_process{system.Kernel().CurrentProcess()};
auto& page_table{current_process->PageTable()};
if (page_table.IsInvalidRegion(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Addr does not fit within the valid region, addr=0x{:016X}, "
"size=0x{:016X}",
addr, size);
return ResultInvalidMemoryRegion;
}
if (page_table.IsInsideHeapRegion(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Addr does not fit within the heap region, addr=0x{:016X}, "
"size=0x{:016X}",
addr, size);
return ResultInvalidMemoryRegion;
}
if (page_table.IsInsideAliasRegion(addr, size)) {
LOG_ERROR(Kernel_SVC,
"Address does not fit within the map region, addr=0x{:016X}, "
"size=0x{:016X}",
addr, size);
return ResultInvalidMemoryRegion;
}
auto shared_memory{
current_process->GetHandleTable().GetObject<KSharedMemory>(shared_memory_handle)};
R_UNLESS(shared_memory.IsNotNull(), ResultInvalidHandle);
return shared_memory->Map(*current_process, addr, size,
static_cast<KMemoryPermission>(permission_type));
}
static ResultCode MapSharedMemory32(Core::System& system, Handle shared_memory_handle, u32 addr,
u32 size, u32 permissions) {
return MapSharedMemory(system, shared_memory_handle, addr, size, permissions);
constexpr bool IsValidRemoteSharedMemoryPermission(Svc::MemoryPermission perm) {
return IsValidSharedMemoryPermission(perm) || perm == Svc::MemoryPermission::DontCare;
}
static ResultCode MapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address,
u64 size, Svc::MemoryPermission map_perm) {
LOG_TRACE(Kernel_SVC,
"called, shared_memory_handle=0x{:X}, addr=0x{:X}, size=0x{:X}, permissions=0x{:08X}",
shmem_handle, address, size, map_perm);
// Validate the address/size.
R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
// Validate the permission.
R_UNLESS(IsValidSharedMemoryPermission(map_perm), ResultInvalidNewMemoryPermission);
// Get the current process.
auto& process = *system.Kernel().CurrentProcess();
auto& page_table = process.PageTable();
// Get the shared memory.
KScopedAutoObject shmem = process.GetHandleTable().GetObject<KSharedMemory>(shmem_handle);
R_UNLESS(shmem.IsNotNull(), ResultInvalidHandle);
// Verify that the mapping is in range.
R_UNLESS(page_table.CanContain(address, size, KMemoryState::Shared), ResultInvalidMemoryRegion);
// Add the shared memory to the process.
R_TRY(process.AddSharedMemory(shmem.GetPointerUnsafe(), address, size));
// Ensure that we clean up the shared memory if we fail to map it.
auto guard =
SCOPE_GUARD({ process.RemoveSharedMemory(shmem.GetPointerUnsafe(), address, size); });
// Map the shared memory.
R_TRY(shmem->Map(process, address, size, map_perm));
// We succeeded.
guard.Cancel();
return RESULT_SUCCESS;
}
static ResultCode MapSharedMemory32(Core::System& system, Handle shmem_handle, u32 address,
u32 size, Svc::MemoryPermission map_perm) {
return MapSharedMemory(system, shmem_handle, address, size, map_perm);
}
static ResultCode UnmapSharedMemory(Core::System& system, Handle shmem_handle, VAddr address,
u64 size) {
// Validate the address/size.
R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
R_UNLESS(size > 0, ResultInvalidSize);
R_UNLESS((address < address + size), ResultInvalidCurrentMemory);
// Get the current process.
auto& process = *system.Kernel().CurrentProcess();
auto& page_table = process.PageTable();
// Get the shared memory.
KScopedAutoObject shmem = process.GetHandleTable().GetObject<KSharedMemory>(shmem_handle);
R_UNLESS(shmem.IsNotNull(), ResultInvalidHandle);
// Verify that the mapping is in range.
R_UNLESS(page_table.CanContain(address, size, KMemoryState::Shared), ResultInvalidMemoryRegion);
// Unmap the shared memory.
R_TRY(shmem->Unmap(process, address, size));
// Remove the shared memory from the process.
process.RemoveSharedMemory(shmem.GetPointerUnsafe(), address, size);
return RESULT_SUCCESS;
}
static ResultCode UnmapSharedMemory32(Core::System& system, Handle shmem_handle, u32 address,
u32 size) {
return UnmapSharedMemory(system, shmem_handle, address, size);
}
static ResultCode QueryProcessMemory(Core::System& system, VAddr memory_info_address,
@@ -2297,7 +2315,7 @@ static const FunctionDef SVC_Table_32[] = {
{0x11, SvcWrap32<SignalEvent32>, "SignalEvent32"},
{0x12, SvcWrap32<ClearEvent32>, "ClearEvent32"},
{0x13, SvcWrap32<MapSharedMemory32>, "MapSharedMemory32"},
{0x14, nullptr, "UnmapSharedMemory32"},
{0x14, SvcWrap32<UnmapSharedMemory32>, "UnmapSharedMemory32"},
{0x15, SvcWrap32<CreateTransferMemory32>, "CreateTransferMemory32"},
{0x16, SvcWrap32<CloseHandle32>, "CloseHandle32"},
{0x17, SvcWrap32<ResetSignal32>, "ResetSignal32"},
@@ -2492,7 +2510,7 @@ static const FunctionDef SVC_Table_64[] = {
{0x11, SvcWrap64<SignalEvent>, "SignalEvent"},
{0x12, SvcWrap64<ClearEvent>, "ClearEvent"},
{0x13, SvcWrap64<MapSharedMemory>, "MapSharedMemory"},
{0x14, nullptr, "UnmapSharedMemory"},
{0x14, SvcWrap64<UnmapSharedMemory>, "UnmapSharedMemory"},
{0x15, SvcWrap64<CreateTransferMemory>, "CreateTransferMemory"},
{0x16, SvcWrap64<CloseHandle>, "CloseHandle"},
{0x17, SvcWrap64<ResetSignal>, "ResetSignal"},

17
src/core/hle/kernel/svc_wrap.h
View File

@@ -232,10 +232,11 @@ void SvcWrap64(Core::System& system) {
func(system, Param(system, 0), Param(system, 1), static_cast<u32>(Param(system, 2))).raw);
}
template <ResultCode func(Core::System&, u32, u64, u64, u32)>
// Used by MapSharedMemory
template <ResultCode func(Core::System&, Handle, u64, u64, Svc::MemoryPermission)>
void SvcWrap64(Core::System& system) {
FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)), Param(system, 1),
Param(system, 2), static_cast<u32>(Param(system, 3)))
FuncReturn(system, func(system, static_cast<Handle>(Param(system, 0)), Param(system, 1),
Param(system, 2), static_cast<Svc::MemoryPermission>(Param(system, 3)))
.raw);
}
@@ -553,6 +554,16 @@ void SvcWrap32(Core::System& system) {
FuncReturn(system, retval);
}
// Used by MapSharedMemory32
template <ResultCode func(Core::System&, Handle, u32, u32, Svc::MemoryPermission)>
void SvcWrap32(Core::System& system) {
const u32 retval =
func(system, static_cast<Handle>(Param(system, 0)), static_cast<u32>(Param(system, 1)), static_cast<u32>(Param(system, 2)),
static_cast<Svc::MemoryPermission>(Param(system, 3)))
.raw;
FuncReturn(system, retval);
}
// Used by SetThreadCoreMask32
template <ResultCode func(Core::System&, Handle, s32, u32, u32)>
void SvcWrap32(Core::System& system) {