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Dynamic Branch Resolution Based on Combined Static Analyses

Authors Wei-Tsun Sun, Hugues Cassé



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Wei-Tsun Sun
Hugues Cassé

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Wei-Tsun Sun and Hugues Cassé. Dynamic Branch Resolution Based on Combined Static Analyses. In 16th International Workshop on Worst-Case Execution Time Analysis (WCET 2016). Open Access Series in Informatics (OASIcs), Volume 55, pp. 8:1-8:10, Schloss Dagstuhl - Leibniz-Zentrum für Informatik (2016)
https://doi.org/10.4230/OASIcs.WCET.2016.8

Abstract

Static analysis requires the full knowledge of the overall program structure. The structure of a program can be represented by a Control Flow Graph (CFG) where vertices are basic blocks (BB) and edges represent the control flow between the BB. To construct a full CFG, all the BB as well as all of their possible targets addresses must be found. In this paper, we present a method to resolve dynamic branches, that identifies the target addresses of BB created due to the switch-cases and calls on function pointers. We also implemented a slicing method to speed up the overall analysis which makes our approach applicable on large and realistic real-time programs.
Keywords
  • WCET
  • static analysis
  • dynamic branch
  • assembly
  • machine language

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