【正文】 unsigned char ifused){ _frame_on = base_frame_on。page_directory = (unsigned long *)(kernel_mem_poolget_frame() * PAGE_SIZE)。unsigned int page_dir_entry = page_fault_addr 22。執(zhí)行引導(dǎo)程序運行模擬器，得到運行界面 運行結(jié)果四、總結(jié)（感想和心得等） 通過這次實驗，我掌握了Linux環(huán)境下常用編譯工具的下載、安裝、使用。0xfffff000)。}void PageTable::handle_fault(REGS * _r){unsigned int page_fault_addr = read_cr2()。void PageTable::init_paging(FarmePool* _kernel_mem_pool, FramePool* _process_mem_pool, const unsigned long _shared_size){ kernel_mem_pool = _kernel_mem_pool。}void Framepool::mark_inaccessible(unsigned long _base_frame_no, unsigned long _nframe,){for(unsigned long i = 0。}/////////////////////////////////unsigned long Framepool::get_frame(){unsigned long which_byte_free。iENTRIKS_PER_PAGE:i++){page_table[i]=0x00。i++){ page_directory[i] = 0 | 2。FramePool* PageTable::process_mem_pool = NULL。 Console::putui(page_fault_addr)。 void PageTable::init_paging(FramePool* _kernel_mem_pool, FramePool* _process_mem_pool, const unsigned long _shared_size) { kernel_mem_pool =_kernel_mem_pool。 static const unsigned int FRAME_SIZE 4096。3掌握Linux系統(tǒng)下程序的編寫及運行。 unsigned char* free_frames。 FramePool* PageTable::process_mem_pool =NULL。 }void PageTable::enable_paging(){ writE_cr3((unsigned long )(current_page_tablepage_directory))。 } unsigned long free_frame_no=process_mem_poolframe()。}page_directory[0] = (unsigned long) page_table | 3。 page_table = (unsigned long*) (new_page_table_addr)。itotal_bitmap_bytes。}unsigned long abs_free_frame_add =base_frame_no + which_byte_free *8 + bit。FramePool* PageTable::process_mem_pool = NULL。i++){ page_directory[i] = 0 | 2。i ENTRIES_PAR_PAGE。加深了對操作系統(tǒng)的認識,了解了操作系統(tǒng)中各種資源分配算法的實現(xiàn),特別是對虛擬存儲頁面置換有了更深入的了解,并能夠用高級語言進行模擬演示。unsigned long page_table_addr = current_page_tablepage_directory[page_dir_entry]。 iENTRIES_PER_PAGE。if(ifused ==USED){ mask=(0x01 bit_counter)。}if(val =