Example #1
0
        /// <summary>
        /// Frees an allocate virtual address range and marks the corresponding physical addresses as free
        /// </summary>
        /// <param name="address">The starting address</param>
        /// <param name="size">The size</param>
        public static void UnMap(void *address, int size)
        {
            // Page align size
            uint sizeAligned  = AlignUp((uint)size);
            int  start        = (int)AlignDown((uint)address) / 0x1000;
            int  addressStart = (int)AlignDown((uint)address);
            int  addressEnd   = addressStart + (int)sizeAligned;

            // Free physical memory
            for (int i = addressStart; i < addressEnd; i += 0x1000)
            {
                void *phys = GetPhysicalFromVirtual((void *)i);
                PhysicalMemoryManager.Free(phys);
            }

            // Free virtual memory
            bitmap.ClearRange(start, (int)(sizeAligned / 0x1000));
        }