NDLI: An efficient code update scheme for DSP applications in mobile embedded systems

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An efficient code update scheme for DSP applications in mobile embedded systems

Content Provider	ACM Digital Library
Author	Li, Weijia Zhang, Youtao
Abstract	DSP processors usually provide dedicated address generation units (AGUs) to assist address computation. By carefully allocating variables in the memory, DSP compilers take advantage of AGUs and generate efficient code with compact size and improved performance. However, DSP applications running on mobile embedded systems often need to be updated after their initial releases. Studies showed that small changes at the source code level may significantly change the variable layout in the memory and thus the binary code, which causes large energy overheads to mobile embedded systems that patch through wireless or satellite communication, and often pecuniary burden to the users. In this paper, we propose an update-conscious code update scheme to effectively reduce patch size. It first performs incremental offset assignment based on a recent variable coalescing heuristic, and then summarizes the code difference using two types of update primitives. Our experimental results showed that using update-conscious code update can greatly improve code similarity and thus reduce the update script sizes.
Starting Page	105
Ending Page	114
Page Count	10
File Format	PDF
ISBN	9781605589534
DOI	10.1145/1755888.1755904
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2010-04-13
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Context-unaware script Incremental coalescing general offset assignment (icgoa) Context-aware script Incremental coalescing simple offset assignment (icsoa)
Content Type	Text
Resource Type	Article

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