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Real-Time Dynamic Relinking

Authors:

Mathias Ekman, Henrik Thane

Publication Type:

Conference/Workshop Paper

Venue:

22nd IEEE International Parallel and Distributed Processing Symposium

Publisher:

IEEE

Abstract

In this paper we present a method for automatically, on demand, linking entire functions into statically linked running embedded multi-tasking real-time applications. The purpose is to facilitate dynamic instrumentation of deployed systems. The method makes it possible to dynamically instrument the target in run-time, without preparing the source code. Code segments that are modified are substituted on the function level by the introduction of a dynamic relink method. The actual modification of the execution binary is performed in a safe and controlled manner by a low interference task. An algorithm is introduced for reusing memory from obsolete functions.

Bibtex

@inproceedings{Ekman2636,
author = {Mathias Ekman and Henrik Thane},
title = {Real-Time Dynamic Relinking},
month = {April},
year = {2008},
booktitle = {Proceedings of the 22:th IEEE International Parallel and Distributed Processing Symposium, IPDPS 2008.},
publisher = {IEEE},
url = {http://www.es.mdu.se/publications/2636-}
}