Embedded Systems Design Europe - August/September 2008 - (Page 18)

cover feature source code and identifying the problematic constructs. For example, with respect to usage of the manifest-loop pattern, optimization tools indicate which loops do not follow this pattern. As a result, violations of the CleanC rules are listed. The analysis tools also include various visualizations of function-call graphs, as some types of CleanC violations are easier to convey in a graphical way. User-guided code transformations may then be applied to the source code to make it compliant with the CleanC programming style. To optimize this process, IMEC is currently developing interactive refactoring tools. For example, to distinguish source ﬁles from header ﬁles, a code-cleaning transformation tool may automatically expand any preprocessing pattern that is not supported by the optimization tools. PLUG-INS FOR ECLIPSE The analysis and refactoring tools are available as plug-ins for the Eclipse/ CDT (C/C++) development platform. These tools are thus integrated in a highly interactive environment where the code may be checked or transformed at any moment while it’s being developed and tested. Figure 2 shows a visualization of the function call graph, showing functions as boxes and function calls as arrows. Once the code has been cleaned into CleanC compliant code, it can be used as source code for IMEC’s mapping tools that assist the designer in mapping the application onto the parallel platform. These tools are responsible for exploring the mapping solution space and for efﬁciently mapping the CleanC sequential algorithm onto the parallel platform-programming model. The multiprocessor parallelization assist (MPA) tool automatically transforms C source code into parallel source code based on designer directives. The tool supports both data-level parallelism and pipeline parallelism, two basic parallel programming patterns. The tool also recognizes and op18 AUGUST – SEPTEMBER 2008 | embedded systems design europe | www.embedded.com/europe 012-013-014-016-017-018-019_ESDE.indd 18 28/08/08 13:19:14 http://www.embedded.com/europe

Table of Contents Feed for the Digital Edition of Embedded Systems Design Europe - August/September 2008

Embedded Systems Design Europe - August/September 2008 Contents TI Overhauls DSP Lineup, Adds 15 Processors QNX Publishes Source Code for File System Congatec to Take on Proprietary Market Swiss Multicore Project Wins Microsoft Grant OpenCores Bundles Development Tool ARM Compiler Boosts Freescale i.MX31 LabVIEW Updated for Multicore and Wireless Cover Feature: Interactive Tool Supports Multiprocessor SoC Design Wanted: Benchmaking for Embedded VMM Hypervisors Graphical Design Empowers Spider Robots Building a Power Supply for Discontinuous Transmission Wireless Networks RTOS Selection & Best Practices Achieving Cache Coherence in a MIPS32 Multicore Design New Products Advertising Contacts

Embedded Systems Design Europe - August/September 2008

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