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Memory Footprint Reduction with Quasi-Static Shared Libraries in MMU-less Embedded Systems

12 years 7 months ago
Memory Footprint Reduction with Quasi-Static Shared Libraries in MMU-less Embedded Systems
Despite a rapid decrease in the price of solid state memory devices, system memory is still a very precious resource in embedded systems. The use of shared libraries is known to be effective in significantly reducing memory usage. Unfortunately, many resource-constrained embedded systems lack MMU, making it extremely difficult to support this technique. To address this problem, we propose a novel shared library scheme called the quasi-static shared library. In quasi-static shared libraries, global symbols are bound to pseudo-addresses at linking time and the actual physical addresses are bound at loading time. This scheme is made possible by emulating MMU’s memory mapping feature with a Data Section Base Register (DSBR) and a Data Section Base Table (DSBT). Quasi-static shared libraries do not require symbol tables which take up time and space at runtime. We have implemented the proposed scheme in a commercial ADSL (Asymmetric Digital Subscriber Line) home network gateway and conduc...
Jaesoo Lee, Jiyong Park, Seongsoo Hong
Added 12 Jun 2010
Updated 12 Jun 2010
Type Conference
Year 2006
Where RTAS
Authors Jaesoo Lee, Jiyong Park, Seongsoo Hong
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