private void SvcUnmapSharedMemory(AThreadState ThreadState) { int Handle = (int)ThreadState.X0; long Position = (long)ThreadState.X1; long Size = (long)ThreadState.X2; if (!PageAligned(Position)) { Device.Log.PrintWarning(LogClass.KernelSvc, $"Address 0x{Position:x16} is not page aligned!"); ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidAddress); return; } if (!PageAligned(Size) || Size == 0) { Device.Log.PrintWarning(LogClass.KernelSvc, $"Size 0x{Size:x16} is not page aligned or is zero!"); ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidSize); return; } if ((ulong)(Position + Size) <= (ulong)Position) { Device.Log.PrintWarning(LogClass.KernelSvc, $"Invalid region address 0x{Position:x16} / size 0x{Size:x16}!"); ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm); return; } KSharedMemory SharedMemory = Process.HandleTable.GetObject <KSharedMemory>(Handle); if (SharedMemory == null) { Device.Log.PrintWarning(LogClass.KernelSvc, $"Invalid shared memory handle 0x{Handle:x8}!"); ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.InvalidHandle); return; } if (!InsideAddrSpace(Position, Size) || InsideMapRegion(Position, Size) || InsideHeapRegion(Position, Size)) { Device.Log.PrintWarning(LogClass.KernelSvc, $"Address 0x{Position:x16} out of range!"); ThreadState.X0 = MakeError(ErrorModule.Kernel, KernelErr.NoAccessPerm); return; } long Result = Process.MemoryManager.UnmapSharedMemory(Position, Size); if (Result != 0) { Device.Log.PrintWarning(LogClass.KernelSvc, $"Operation failed with error 0x{Result:x}!"); } ThreadState.X0 = (ulong)Result; }