A Dynamic Module Debugging System for Embedded Systems Based on Host-side Dynamic Link

Abstract

The invention discloses a dynamic module debugging system for an embedded system based on a host end dynamic link, which includes: a host machine and a target machine; the host machine includes: a project management module, which is used to generate a specified project after compilation Relocatable object files; dynamic linker, used by the host to generate absolutely positionable object files according to the actual address of symbols fed back by relocatable files, link scripts, and target machines; GDB debugger, used by users through commands or graphics Send debugging commands in a standardized way; the host computer support platform is used as the communication interface between the host computer and the target computer; the target computer includes: a dynamic loader, which is used to manage all symbols on the target computer; a dynamic linker proxy module, which is used to communicate with the target computer The interaction of the host dynamic linker provides services for the dynamic linker to complete the dynamic link; the debugging agent module is used to control the running of the debugged program by receiving the debugging commands of the GDB debugger; the target machine support platform is used as the target machine The communication interface with the host is network.

Description

technical field [0001] The invention belongs to the field of computer embedded software, in particular to an embedded system dynamic module debugging system based on a host end dynamic link. Background technique [0002] Dynamic linking is a technology relative to static linking. Dynamic linking does not link the object files that make up the program during the compilation phase, but postpones the linking process until runtime. For embedded systems with limited resources, dynamic link technology can effectively solve the problem of wasting disk and memory space due to multiple copies of shared target files, and can also reduce the swapping in and out of physical pages, increase the hit rate of CPU cache, and can also Make program upgrades easier. [0003] The basic idea of ​​dynamic linking determines that the address of the function and variable in the corresponding object file of the dynamic module is a relative address, and its real address can only be generated when th...

AI Technical Summary

Problems solved by technology

This method undoubtedly increases the frequency of information interaction between the host computer and the target computer during the debugging phase, reduces debugging performance, and affects user experience

In addition, the host-side debugging process depends on the implementation of the target machine's file system and dynamic loader, which reduces the versatility and portability of the host-side debugging function

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