diff options
Diffstat (limited to 'src/core/hle/kernel/svc.cpp')
-rw-r--r-- | src/core/hle/kernel/svc.cpp | 120 |
1 files changed, 87 insertions, 33 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp index f500fd2e7..c5c1697ee 100644 --- a/src/core/hle/kernel/svc.cpp +++ b/src/core/hle/kernel/svc.cpp @@ -35,10 +35,21 @@ #include "core/hle/service/service.h" namespace Kernel { +namespace { +constexpr bool Is4KBAligned(VAddr address) { + return (address & 0xFFF) == 0; +} +} // Anonymous namespace /// Set the process heap to a given Size. It can both extend and shrink the heap. static ResultCode SetHeapSize(VAddr* heap_addr, u64 heap_size) { LOG_TRACE(Kernel_SVC, "called, heap_size=0x{:X}", heap_size); + + // Size must be a multiple of 0x200000 (2MB) and be equal to or less than 4GB. + if ((heap_size & 0xFFFFFFFE001FFFFF) != 0) { + return ERR_INVALID_SIZE; + } + auto& process = *Core::CurrentProcess(); CASCADE_RESULT(*heap_addr, process.HeapAllocate(Memory::HEAP_VADDR, heap_size, VMAPermission::ReadWrite)); @@ -56,6 +67,15 @@ static ResultCode SetMemoryAttribute(VAddr addr, u64 size, u32 state0, u32 state static ResultCode MapMemory(VAddr dst_addr, VAddr src_addr, u64 size) { LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr, src_addr, size); + + if (!Is4KBAligned(dst_addr) || !Is4KBAligned(src_addr)) { + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Is4KBAligned(size)) { + return ERR_INVALID_SIZE; + } + return Core::CurrentProcess()->MirrorMemory(dst_addr, src_addr, size); } @@ -63,6 +83,15 @@ static ResultCode MapMemory(VAddr dst_addr, VAddr src_addr, u64 size) { static ResultCode UnmapMemory(VAddr dst_addr, VAddr src_addr, u64 size) { LOG_TRACE(Kernel_SVC, "called, dst_addr=0x{:X}, src_addr=0x{:X}, size=0x{:X}", dst_addr, src_addr, size); + + if (!Is4KBAligned(dst_addr) || !Is4KBAligned(src_addr)) { + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Is4KBAligned(size)) { + return ERR_INVALID_SIZE; + } + return Core::CurrentProcess()->UnmapMemory(dst_addr, src_addr, size); } @@ -146,7 +175,7 @@ static ResultCode GetProcessId(u32* process_id, Handle process_handle) { /// Default thread wakeup callback for WaitSynchronization static bool DefaultThreadWakeupCallback(ThreadWakeupReason reason, SharedPtr<Thread> thread, - SharedPtr<WaitObject> object, size_t index) { + SharedPtr<WaitObject> object, std::size_t index) { ASSERT(thread->status == ThreadStatus::WaitSynchAny); if (reason == ThreadWakeupReason::Timeout) { @@ -415,35 +444,43 @@ static ResultCode MapSharedMemory(Handle shared_memory_handle, VAddr addr, u64 s "called, shared_memory_handle=0x{:X}, addr=0x{:X}, size=0x{:X}, permissions=0x{:08X}", shared_memory_handle, addr, size, permissions); + if (!Is4KBAligned(addr)) { + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Is4KBAligned(size)) { + return ERR_INVALID_SIZE; + } + + const auto permissions_type = static_cast<MemoryPermission>(permissions); + if (permissions_type != MemoryPermission::Read && + permissions_type != MemoryPermission::ReadWrite) { + LOG_ERROR(Kernel_SVC, "Invalid permissions=0x{:08X}", permissions); + return ERR_INVALID_MEMORY_PERMISSIONS; + } + auto& kernel = Core::System::GetInstance().Kernel(); auto shared_memory = kernel.HandleTable().Get<SharedMemory>(shared_memory_handle); if (!shared_memory) { return ERR_INVALID_HANDLE; } - MemoryPermission permissions_type = static_cast<MemoryPermission>(permissions); - switch (permissions_type) { - case MemoryPermission::Read: - case MemoryPermission::Write: - case MemoryPermission::ReadWrite: - case MemoryPermission::Execute: - case MemoryPermission::ReadExecute: - case MemoryPermission::WriteExecute: - case MemoryPermission::ReadWriteExecute: - case MemoryPermission::DontCare: - return shared_memory->Map(Core::CurrentProcess().get(), addr, permissions_type, - MemoryPermission::DontCare); - default: - LOG_ERROR(Kernel_SVC, "unknown permissions=0x{:08X}", permissions); - } - - return RESULT_SUCCESS; + return shared_memory->Map(Core::CurrentProcess().get(), addr, permissions_type, + MemoryPermission::DontCare); } static ResultCode UnmapSharedMemory(Handle shared_memory_handle, VAddr addr, u64 size) { LOG_WARNING(Kernel_SVC, "called, shared_memory_handle=0x{:08X}, addr=0x{:X}, size=0x{:X}", shared_memory_handle, addr, size); + if (!Is4KBAligned(addr)) { + return ERR_INVALID_ADDRESS; + } + + if (size == 0 || !Is4KBAligned(size)) { + return ERR_INVALID_SIZE; + } + auto& kernel = Core::System::GetInstance().Kernel(); auto shared_memory = kernel.HandleTable().Get<SharedMemory>(shared_memory_handle); @@ -524,7 +561,7 @@ static void ExitProcess() { /// Creates a new thread static ResultCode CreateThread(Handle* out_handle, VAddr entry_point, u64 arg, VAddr stack_top, u32 priority, s32 processor_id) { - std::string name = fmt::format("unknown-{:X}", entry_point); + std::string name = fmt::format("thread-{:X}", entry_point); if (priority > THREADPRIO_LOWEST) { return ERR_INVALID_THREAD_PRIORITY; @@ -647,16 +684,17 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target LOG_TRACE(Kernel_SVC, "called, condition_variable_addr=0x{:X}, target=0x{:08X}", condition_variable_addr, target); - auto RetrieveWaitingThreads = - [](size_t core_index, std::vector<SharedPtr<Thread>>& waiting_threads, VAddr condvar_addr) { - const auto& scheduler = Core::System::GetInstance().Scheduler(core_index); - auto& thread_list = scheduler->GetThreadList(); + auto RetrieveWaitingThreads = [](std::size_t core_index, + std::vector<SharedPtr<Thread>>& waiting_threads, + VAddr condvar_addr) { + const auto& scheduler = Core::System::GetInstance().Scheduler(core_index); + auto& thread_list = scheduler->GetThreadList(); - for (auto& thread : thread_list) { - if (thread->condvar_wait_address == condvar_addr) - waiting_threads.push_back(thread); - } - }; + for (auto& thread : thread_list) { + if (thread->condvar_wait_address == condvar_addr) + waiting_threads.push_back(thread); + } + }; // Retrieve a list of all threads that are waiting for this condition variable. std::vector<SharedPtr<Thread>> waiting_threads; @@ -672,7 +710,7 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target // Only process up to 'target' threads, unless 'target' is -1, in which case process // them all. - size_t last = waiting_threads.size(); + std::size_t last = waiting_threads.size(); if (target != -1) last = target; @@ -680,12 +718,12 @@ static ResultCode SignalProcessWideKey(VAddr condition_variable_addr, s32 target if (last > waiting_threads.size()) return RESULT_SUCCESS; - for (size_t index = 0; index < last; ++index) { + for (std::size_t index = 0; index < last; ++index) { auto& thread = waiting_threads[index]; ASSERT(thread->condvar_wait_address == condition_variable_addr); - size_t current_core = Core::System::GetInstance().CurrentCoreIndex(); + std::size_t current_core = Core::System::GetInstance().CurrentCoreIndex(); auto& monitor = Core::System::GetInstance().Monitor(); @@ -898,12 +936,28 @@ static ResultCode CreateSharedMemory(Handle* handle, u64 size, u32 local_permiss LOG_TRACE(Kernel_SVC, "called, size=0x{:X}, localPerms=0x{:08X}, remotePerms=0x{:08X}", size, local_permissions, remote_permissions); + // Size must be a multiple of 4KB and be less than or equal to + // approx. 8 GB (actually (1GB - 512B) * 8) + if (size == 0 || (size & 0xFFFFFFFE00000FFF) != 0) { + return ERR_INVALID_SIZE; + } + + const auto local_perms = static_cast<MemoryPermission>(local_permissions); + if (local_perms != MemoryPermission::Read && local_perms != MemoryPermission::ReadWrite) { + return ERR_INVALID_MEMORY_PERMISSIONS; + } + + const auto remote_perms = static_cast<MemoryPermission>(remote_permissions); + if (remote_perms != MemoryPermission::Read && remote_perms != MemoryPermission::ReadWrite && + remote_perms != MemoryPermission::DontCare) { + return ERR_INVALID_MEMORY_PERMISSIONS; + } + auto& kernel = Core::System::GetInstance().Kernel(); auto& handle_table = kernel.HandleTable(); auto shared_mem_handle = SharedMemory::Create(kernel, handle_table.Get<Process>(KernelHandle::CurrentProcess), size, - static_cast<MemoryPermission>(local_permissions), - static_cast<MemoryPermission>(remote_permissions)); + local_perms, remote_perms); CASCADE_RESULT(*handle, handle_table.Create(shared_mem_handle)); return RESULT_SUCCESS; |