Analysis of executables for WCET concerns
Andrea Flexeder, Michael Petter, Helmut Seidl · 2008
In this paper we present an analysis of assembly code for safety-critical embedded environments. Since local and global variables are the core concepts affecting the control flow of such programs, we first concentrate on classifying memory accesses as candidates for local or global variables. This is achieved by an interprocedural analysis of affine equality relations. We present how to refine this information via a combined affine equality relation and interval analysis. Thus, we achieve a sufficiently accurate classification of memory accesses in this class of binaries. As an application, we refine WCET analyses by yielding alignment properties of memory accesses.