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https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-23 04:41:12 +00:00
kern: fix incorrect cache routines, implement SvcSetProcessMemoryPermission
This commit is contained in:
parent
26df56cd87
commit
4fca870f2f
4 changed files with 57 additions and 11 deletions
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@ -371,7 +371,7 @@ namespace ams::kern::arch::arm64::cpu {
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Result StoreDataCache(const void *addr, size_t size) {
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KScopedCoreMigrationDisable dm;
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const uintptr_t start = util::AlignDown(reinterpret_cast<uintptr_t>(addr), DataCacheLineSize);
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const uintptr_t end = util::AlignUp( reinterpret_cast<uintptr_t>(addr), DataCacheLineSize);
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const uintptr_t end = util::AlignUp( reinterpret_cast<uintptr_t>(addr) + size, DataCacheLineSize);
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return StoreDataCacheRange(start, end);
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}
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@ -379,7 +379,7 @@ namespace ams::kern::arch::arm64::cpu {
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Result FlushDataCache(const void *addr, size_t size) {
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KScopedCoreMigrationDisable dm;
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const uintptr_t start = util::AlignDown(reinterpret_cast<uintptr_t>(addr), DataCacheLineSize);
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const uintptr_t end = util::AlignUp( reinterpret_cast<uintptr_t>(addr), DataCacheLineSize);
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const uintptr_t end = util::AlignUp( reinterpret_cast<uintptr_t>(addr) + size, DataCacheLineSize);
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return FlushDataCacheRange(start, end);
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}
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@ -387,7 +387,7 @@ namespace ams::kern::arch::arm64::cpu {
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Result InvalidateInstructionCache(void *addr, size_t size) {
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KScopedCoreMigrationDisable dm;
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const uintptr_t start = util::AlignDown(reinterpret_cast<uintptr_t>(addr), InstructionCacheLineSize);
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const uintptr_t end = util::AlignUp( reinterpret_cast<uintptr_t>(addr), InstructionCacheLineSize);
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const uintptr_t end = util::AlignUp( reinterpret_cast<uintptr_t>(addr) + size, InstructionCacheLineSize);
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R_TRY(InvalidateInstructionCacheRange(start, end));
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@ -40,6 +40,14 @@ namespace ams::kern::arch::arm64 {
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MESOSPHERE_LOG("User Exception occurred in %s\n", cur_process->GetName());
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for (size_t i = 0; i < 31; i++) {
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MESOSPHERE_LOG("X[%02zu] = %016lx\n", i, context->x[i]);
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}
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MESOSPHERE_LOG("PC = %016lx\n", context->pc);
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MESOSPHERE_LOG("SP = %016lx\n", context->sp);
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MESOSPHERE_PANIC("Unhandled Exception in Supervisor Mode\n");
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const u64 ec = (esr >> 26) & 0x3F;
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switch (ec) {
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case 0x0: /* Unknown */
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@ -1035,6 +1035,7 @@ namespace ams::kern {
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KMemoryState new_state = old_state;
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const bool is_w = (new_perm & KMemoryPermission_UserWrite) == KMemoryPermission_UserWrite;
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const bool is_x = (new_perm & KMemoryPermission_UserExecute) == KMemoryPermission_UserExecute;
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const bool was_x = (old_perm & KMemoryPermission_UserExecute) == KMemoryPermission_UserExecute;
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MESOSPHERE_ASSERT(!(is_w && is_x));
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if (is_w) {
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@ -1050,6 +1051,9 @@ namespace ams::kern {
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R_TRY(this->MakePageGroup(pg, GetInteger(addr), num_pages));
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}
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/* Succeed if there's nothing to do. */
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R_SUCCEED_IF(old_perm == new_perm && old_state == new_state);
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/* Create an update allocator. */
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KMemoryBlockManagerUpdateAllocator allocator(this->memory_block_slab_manager);
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R_TRY(allocator.GetResult());
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@ -1059,7 +1063,7 @@ namespace ams::kern {
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/* Perform mapping operation. */
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const KPageProperties properties = { new_perm, false, false, false };
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const auto operation = is_x ? OperationType_ChangePermissionsAndRefresh : OperationType_ChangePermissions;
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const auto operation = was_x ? OperationType_ChangePermissionsAndRefresh : OperationType_ChangePermissions;
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R_TRY(this->Operate(updater.GetPageList(), addr, num_pages, Null<KPhysicalAddress>, false, properties, operation, false));
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/* Update the blocks. */
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@ -21,14 +21,48 @@ namespace ams::kern::svc {
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namespace {
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constexpr bool IsValidProcessMemoryPermission(ams::svc::MemoryPermission perm) {
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switch (perm) {
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case ams::svc::MemoryPermission_None:
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case ams::svc::MemoryPermission_Read:
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case ams::svc::MemoryPermission_ReadWrite:
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case ams::svc::MemoryPermission_ReadExecute:
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return true;
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default:
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return false;
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}
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}
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Result SetProcessMemoryPermission(ams::svc::Handle process_handle, uint64_t address, uint64_t size, ams::svc::MemoryPermission perm) {
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/* Validate the address/size. */
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R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
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R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
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R_UNLESS(size > 0, svc::ResultInvalidSize());
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R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
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R_UNLESS(address == static_cast<uintptr_t>(address), svc::ResultInvalidCurrentMemory());
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R_UNLESS(size == static_cast<size_t>(size), svc::ResultInvalidCurrentMemory());
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/* Validate the memory permission. */
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R_UNLESS(IsValidProcessMemoryPermission(perm), svc::ResultInvalidNewMemoryPermission());
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/* Get the process from its handle. */
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KScopedAutoObject process = GetCurrentProcess().GetHandleTable().GetObject<KProcess>(process_handle);
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R_UNLESS(process.IsNotNull(), svc::ResultInvalidHandle());
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/* Validate that the address is in range. */
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auto &page_table = process->GetPageTable();
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R_UNLESS(page_table.Contains(address, size), svc::ResultInvalidCurrentMemory());
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/* Set the memory permission. */
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return page_table.SetProcessMemoryPermission(address, size, perm);
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}
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}
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/* ============================= 64 ABI ============================= */
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Result SetProcessMemoryPermission64(ams::svc::Handle process_handle, uint64_t address, uint64_t size, ams::svc::MemoryPermission perm) {
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MESOSPHERE_PANIC("Stubbed SvcSetProcessMemoryPermission64 was called.");
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return SetProcessMemoryPermission(process_handle, address, size, perm);
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}
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Result MapProcessMemory64(ams::svc::Address dst_address, ams::svc::Handle process_handle, uint64_t src_address, ams::svc::Size size) {
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@ -50,7 +84,7 @@ namespace ams::kern::svc {
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/* ============================= 64From32 ABI ============================= */
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Result SetProcessMemoryPermission64From32(ams::svc::Handle process_handle, uint64_t address, uint64_t size, ams::svc::MemoryPermission perm) {
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MESOSPHERE_PANIC("Stubbed SvcSetProcessMemoryPermission64From32 was called.");
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return SetProcessMemoryPermission(process_handle, address, size, perm);
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}
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Result MapProcessMemory64From32(ams::svc::Address dst_address, ams::svc::Handle process_handle, uint64_t src_address, ams::svc::Size size) {
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