DWARF is the binary format used by debuggers to specify the types and other information related to values in the running program.
http://www.dwarfstd.org/doc/DWARF4.pdf
Parsing dwarf is not very fun. There are two main libraries which will do that for you, libdwarf and libbfd. Because libbfd(binary file descriptor) seems more arcane and more rigidly suited to working with elf/dwarf files external to the current program, I'm electing to use libdwarf. Documentation seemed hard to find, but it appears to be well-documented on sourceforge:
http://sourceforge.net/p/elftoolchain/wiki/libdwarf/
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