ims relocation

memory address space to the unique one-dimensional physical linear space in the memory? Two problems are involved:First, the division of virtual space.The second is to load the linked and divided content in the virtual space into the memory, and map the virtual space address to the memory address. Address ing.Address ing is to establish the relationship between virtual addresses and memory addresses.2. Static address Relocation (

performs the first correction operation on the dynamic link library page, the new page must be allocated from the page file, and copy the entire page. Although the efficiency of scanning dynamic link library relocation segments and memory correction algorithms is high, the execution of correction operations will increase the loading time of the dynamic link library. (The complexity of cross-segment operations is the linear function that requires fixi

-independent, it is necessary to complete Part of the relocation processing and symbol search at runtime before it can jump to the entry point of the program. Therefore, while bringing flexibility, it also slows down the startup of ELF files, especially because parsing symbolic references takes a lot of time, especially for large programs that use multiple shared libraries. However, in many embedded systems, executable files and shared libraries are r

Chapter 3 Storage Management Transferred from: http: // 59.67.71.237: 8080/ls/web/study/content/chapter3.htm Storage Management is an important part of the operating system. It manages the memory space of the computer system. The objective is to make full use of the memory space, provide the Storage Foundation for concurrent execution of multiple programs, and make it as convenient as possible for users.3.1 purpose of Storage Management When using multi-channel programming technology, it is nece

[size] of Base Relocation Directory82BC0 [38] address [size] of Debug Directory0 [0] address [size] of Description Directory0 [0] address [size] of Special Directory0 [0] address [size] of Thread Storage Directory4E080 [48] address [size] of Load Configuration Directory280 [1C] address [size] of Bound Import Directory1000 [620] address [size] of Import Address Table Directory0 [0] address [size] of Delay Import Directory0 [0] address [size] of COR20

target code, rather than the default format of the system.-U or -- undefined-only: Only undefined symbols (those external symbols) are displayed ).-L or -- line-numbers: Use debugging information for each symbol to find the file name and row number. For the defined symbols, find the line number of the symbol address. For undefined symbols, find the row number pointing to the symbol relocation entry. If you can find the row number information, it is d

The following examples take the example of Project X projects tiny210 (s5pv210 platform, ARMV7 architecture) [Uboot] uboot process series :[Project X] tiny210 (s5pv210) power-on START process (BL0-BL2)[Uboot] (chapter I) uboot process--Overview[Uboot] (chapter II) uboot process--UBOOT-SPL compilation process =================================================================================== One, Global_data function 1, the significance of Global_data existence in some cases, the uboot is run on

the VA type.The sizeofzerofill data area needs to clear the size of 0 DataCharacteristics2. How does the system loader process TLS of EXE? After the system loader completes the relocation and input table filling, it starts to process TLS. If tls_dir exists,Obtain the TLS data size. endaddressofrawdata-startaddressofrawdata +Sizeofzerofill: allocates a piece of memory by size and stores the address in pdword FS: [0x2c] +Tls_slot, and then copy the num

size specified by the compiler or consortium compiler. 6. pointertorawdata: This is the file-based offset in this section. The PE Loader uses this field value to locate the position of the section data in the file. If you set up a pe program (instead of loading it by the operating system loader) in the memory ing mode, you must find the information in this section based on this value, instead of following the RVA value in virtualaddress. 7. pointertorelocations: In objs, This is the offset base

prefetch buffer */ SetSysClock();#ifdef VECT_TAB_SRAM SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */#else SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */#endif } From the function description, this function isInitialize the internal falsh, PLL, and update the system clock.. This function must be called After resetting a

3. Storage ManagementObject: main memory (RAM)Memory: The main place of key resource information storage in computer system.Main functions: Allocating and recovering memory space, improving the utilization of primary memory, and effectively protecting the stored information (master)Development direction: High speed, large capacity, small volume　　Virtual address: That is, relative address, program address, logical address, symbolic address, name addressName Space--(assembly or compilation, link e