NDLI: A fully-non-transparent approach to the code location problem

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A fully-non-transparent approach to the code location problem

Content Provider	ACM Digital Library
Author	Riss, Frédéric Santana, Miguel Fernandez, Jean-Claude Venturini, Hugo
Abstract	In the context of embedded systems such as cell-phones, PDA or cars and planes software, optimizations of code are required because of timing and memory constraints imposed. Many problems arise when trying to debug optimized code. One of them is the irrelevance of the mapping between the source code and the optimized target program: the Code Location Problem. This paper proposes a solution to this problem in the case of highly optimized code in the context of embedded systems. Two approaches exist: non-transparent and transparent debugging. Our approach is non-transparent. The idea is to reveal the execution of the optimized program to the user so the latter understands the mapping to the source code in spite of transformations applied to the program. We do not emulate the execution of the unoptimized program. We make good use of the programmer's knowledge of its development platform. Standard debuggers do not provide the required mechanisms while compilers do not provide the relevant debug information. We propose a novel method to maintain accurate debug information when optimizing at compilation and we experiment this method on the MMDSP+ C compiler and the IDBug debugger.
Starting Page	61
Ending Page	68
Page Count	8
File Format	PDF
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-03-13
Publisher Place	New York
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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