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Arnaldo Carvalho de Melo – Red Hat Inc.

The 7 dwarves: Debugging information beyond gdb

The DWARF debugging information format is used in debuggers such as gdb, and more recently in tools such as systemtap and frysk.

In this paper the author will show more scenarios where such information can be useful, including:

• showing the layout of data structures;
• reorganizing such data structures to remove alignment holes and improve CPU cache utilization;
• statistics about inlining of functions;
• recreating data structures and functions from the debugging information;
• showing binary diffs to help understand the effects of any code change;

Submitted paper

Paper (PDF) and Paper (tgz) .