コード例 #1
0
        //public static Addr kernelStack = null;
        //public static Addr kernelStackBottom = null;
        //public static USize kernelStackSize = null;

        public static unsafe void InitializeUserMode()
        {
            if (!KConfig.UseUserMode)
            {
                return;
            }

            if (KConfig.UseTaskStateSegment)
            {
                //kernelStackSize = 256 * 4096;
                TssAddr = VirtualPageManager.AllocatePages(1);
                PageTable.KernelTable.SetWritable(TssAddr, 4096);
                KernelMemoryMapManager.Header->Used.Add(new KernelMemoryMap(TssAddr, 4096, BootInfoMemoryType.TSS, AddressSpaceKind.Virtual));
                //kernelStack = RawVirtualFrameAllocator.RequestRawVirtalMemoryPages(256); // TODO: Decrease Kernel Stack, because Stack have to be changed directly because of multi-threading.
                //kernelStackBottom = kernelStack + kernelStackSize;

                //KernelMessage.WriteLine("tssEntry: {0:X8}, tssKernelStack: {1:X8}-{2:X8}", tssAddr, kernelStack, kernelStackBottom - 1);

                //MemoryManagement.PageTableExtensions.SetWritable(PageTable.KernelTable, kernelStack, 256 * 4096);
            }

            // Disabling Interrupts here is very important, otherwise we will get randomly an Invalid TSS Exception.
            IDTManager.Stop();
            GDT.SetupUserMode(TssAddr);
            IDTManager.Start();
        }
コード例 #2
0
        private static unsafe void InitializeUserMode()
        {
            if (!KConfig.UseUserMode)
            {
                return;
            }

            if (KConfig.UseTaskStateSegment)
            {
                TssAddr = VirtualPageManager.AllocatePages(1);
                PageTable.KernelTable.SetWritable(TssAddr, 4096);
                KernelMemoryMapManager.Header->Used.Add(new KernelMemoryMap(TssAddr, 4096, BootInfoMemoryType.TSS, AddressSpaceKind.Virtual));
            }

            // Disabling Interrupts here is very important, otherwise we will get randomly an Invalid TSS Exception.
            Uninterruptible.Execute(() =>
            {
                GDT.SetupUserMode(TssAddr);
            });
        }