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Code Issues Releases Activity

core: hle: kernel: svc: Updates to SetMemoryAttribute and SetMemoryPermission.

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This commit is contained in:
bunnei 2022-01-08 03:16:59 -08:00
parent b9a313057e
commit af4696657c
3 changed files with 46 additions and 45 deletions
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38
src/core/hle/kernel/k_page_table.cpp
View file

@ -837,24 +837,36 @@ ResultCode KPageTable::SetMemoryPermission(VAddr addr, std::size_t size,
return ResultSuccess;
}
ResultCode KPageTable::SetMemoryAttribute(VAddr addr, std::size_t size, KMemoryAttribute mask,
KMemoryAttribute value) {
ResultCode KPageTable::SetMemoryAttribute(VAddr addr, std::size_t size, u32 mask, u32 attr) {
const size_t num_pages = size / PageSize;
ASSERT((static_cast<KMemoryAttribute>(mask) | KMemoryAttribute::SetMask) ==
KMemoryAttribute::SetMask);
// Lock the table.
std::lock_guard lock{page_table_lock};
KMemoryState state{};
KMemoryPermission perm{};
KMemoryAttribute attribute{};
CASCADE_CODE(CheckMemoryState(
&state, &perm, &attribute, nullptr, addr, size, KMemoryState::FlagCanChangeAttribute,
// Verify we can change the memory attribute.
KMemoryState old_state;
KMemoryPermission old_perm;
KMemoryAttribute old_attr;
size_t num_allocator_blocks;
constexpr auto AttributeTestMask =
~(KMemoryAttribute::SetMask | KMemoryAttribute::DeviceShared);
R_TRY(this->CheckMemoryState(
std::addressof(old_state), std::addressof(old_perm), std::addressof(old_attr),
std::addressof(num_allocator_blocks), addr, size, KMemoryState::FlagCanChangeAttribute,
KMemoryState::FlagCanChangeAttribute, KMemoryPermission::None, KMemoryPermission::None,
KMemoryAttribute::LockedAndIpcLocked, KMemoryAttribute::None,
KMemoryAttribute::DeviceSharedAndUncached));
AttributeTestMask, KMemoryAttribute::None, ~AttributeTestMask));
attribute = attribute & ~mask;
attribute = attribute | (mask & value);
// Determine the new attribute.
const auto new_attr = ((old_attr & static_cast<KMemoryAttribute>(~mask)) |
static_cast<KMemoryAttribute>(attr & mask));
block_manager->Update(addr, size / PageSize, state, perm, attribute);
// Perform operation.
this->Operate(addr, num_pages, old_perm, OperationType::ChangePermissionsAndRefresh);
// Update the blocks.
block_manager->Update(addr, num_pages, old_state, old_perm, new_attr);
return ResultSuccess;
}

3
src/core/hle/kernel/k_page_table.h
View file

@ -48,8 +48,7 @@ public:
ResultCode ReserveTransferMemory(VAddr addr, std::size_t size, KMemoryPermission perm);
ResultCode ResetTransferMemory(VAddr addr, std::size_t size);
ResultCode SetMemoryPermission(VAddr addr, std::size_t size, Svc::MemoryPermission perm);
ResultCode SetMemoryAttribute(VAddr addr, std::size_t size, KMemoryAttribute mask,
KMemoryAttribute value);
ResultCode SetMemoryAttribute(VAddr addr, std::size_t size, u32 mask, u32 attr);
ResultCode SetMaxHeapSize(std::size_t size);
ResultCode SetHeapSize(VAddr* out, std::size_t size);
ResultVal<VAddr> AllocateAndMapMemory(std::size_t needed_num_pages, std::size_t align,

50
src/core/hle/kernel/svc.cpp
View file

@ -168,6 +168,9 @@ constexpr bool IsValidSetMemoryPermission(MemoryPermission perm) {
static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 size,
MemoryPermission perm) {
LOG_DEBUG(Kernel_SVC, "called, address=0x{:016X}, size=0x{:X}, perm=0x{:08X", address, size,
perm);
// Validate address / size.
R_UNLESS(Common::IsAligned(address, PageSize), ResultInvalidAddress);
R_UNLESS(Common::IsAligned(size, PageSize), ResultInvalidSize);
@ -186,46 +189,33 @@ static ResultCode SetMemoryPermission(Core::System& system, VAddr address, u64 s
}
static ResultCode SetMemoryAttribute(Core::System& system, VAddr address, u64 size, u32 mask,
u32 attribute) {
u32 attr) {
LOG_DEBUG(Kernel_SVC,
"called, address=0x{:016X}, size=0x{:X}, mask=0x{:08X}, attribute=0x{:08X}", address,
size, mask, attribute);
size, mask, attr);
if (!Common::Is4KBAligned(address)) {
LOG_ERROR(Kernel_SVC, "Address not page aligned (0x{:016X})", address);
return ResultInvalidAddress;
}
// Validate 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);
if (size == 0 || !Common::Is4KBAligned(size)) {
LOG_ERROR(Kernel_SVC, "Invalid size (0x{:X}). Size must be non-zero and page aligned.",
size);
return ResultInvalidAddress;
}
if (!IsValidAddressRange(address, size)) {
LOG_ERROR(Kernel_SVC, "Address range overflowed (Address: 0x{:016X}, Size: 0x{:016X})",
address, size);
return ResultInvalidCurrentMemory;
}
const auto attributes{static_cast<MemoryAttribute>(mask | attribute)};
if (attributes != static_cast<MemoryAttribute>(mask) ||
(attributes | MemoryAttribute::Uncached) != MemoryAttribute::Uncached) {
LOG_ERROR(Kernel_SVC,
"Memory attribute doesn't match the given mask (Attribute: 0x{:X}, Mask: {:X}",
attribute, mask);
return ResultInvalidCombination;
}
// Validate the attribute and mask.
constexpr u32 SupportedMask = static_cast<u32>(MemoryAttribute::Uncached);
R_UNLESS((mask | attr) == mask, ResultInvalidCombination);
R_UNLESS((mask | attr | SupportedMask) == SupportedMask, ResultInvalidCombination);
// Validate that the region is in range for the current process.
auto& page_table{system.Kernel().CurrentProcess()->PageTable()};
R_UNLESS(page_table.Contains(address, size), ResultInvalidCurrentMemory);
return page_table.SetMemoryAttribute(address, size, static_cast<KMemoryAttribute>(mask),
static_cast<KMemoryAttribute>(attribute));
// Set the memory attribute.
return page_table.SetMemoryAttribute(address, size, mask, attr);
}
static ResultCode SetMemoryAttribute32(Core::System& system, u32 address, u32 size, u32 mask,
u32 attribute) {
return SetMemoryAttribute(system, address, size, mask, attribute);
u32 attr) {
return SetMemoryAttribute(system, address, size, mask, attr);
}
/// Maps a memory range into a different range.