Overview of reading and writing CDA debugging information

This information discusses how the libelf, libdwarf, and libddpi libraries work together to access and use debugging information.

Reading and writing CDA debugging information

Note: This information requires that you are familiar with the concepts in About Common Debug Architecture and the DWARF format. For more information about Debug Information Entries (DIEs) and their structure, see DWARF Debugging Information Format.

The information is divided up into the following sections:

Section	Description
Creating an ELF descriptor	This section explains how `libelf` uses a file handle and creates an ELF descriptor. An ELF descriptor can be created for reading or writing.
Writing DWARF data to the ELF object file	This section explains how `libelf` and `libdwarf` add DWARF debugging information to the ELF object file.
Reading DWARF data from a GOFF program object file	This section explains how `libdwarf` reads DWARF debugging information from a GOFF program object file.
Reading DWARF data from an ELF object file with libelf and libdwarf	This section explains how `libelf` and `libdwarf` reads the DWARF debugging information from the ELF object file.
Reading DWARF data from an executable module with libelf, libdwarf, and libddpi	This section explains how `libelf`, `libdwarf`, and `libddpi` can work together to read DWARF debugging information from an executable module produced by the z/OS XL C/C++ compiler.
Accessing debugging information from a z/OS XL C/C++ compiler executable module	This section explains how to read other debugging information from an executable module produced by the z/OS XL C/C++ compiler.