This information supports IBM® z/OS® (5650-ZOS)
and contains information about z/OS Runtime
Library Extensions.
- Purpose of this information
This information is the reference for IBM extensions to the
libdwarf and
libelf libraries.
Note: This
document discusses only IBM extensions
and does not provide a detailed explanation of standard DWARF and
ELF APIs.
- Who should read this information
This information is intended for programmers who
will be developing program analysis applications and debugging applications
for the IBM XL C/C++ or Enterprise COBOL compilers on
the z/OS operating system.
The libraries provided by CDA allow applications to create DWARF debugging
information in ELF object file format. They also allow applications
to query DWARF debugging information from ELF object files or GOFF
program object files on the z/OS operating
system.
- How to use this information
It is assumed that you have a working knowledge of the following
items:
- The z/OS operating system
- The libdwarf APIs
- The libelf APIs
- The ELF ABI
- Writing debugging programs in
C, C++ or COBOL on z/OS
- The IBM z/OS Language Environment®
- POSIX on z/OS
- z/OS UNIX System Services shell
- Terminology used in this information
This document uses the following terminology:
- API
- Application programming interface. An interface that allows
an application program that is written in a high-level language to
use specific data or functions of the operating system or another
program. An extension to a standard DWARF API can include:
- Extensions to standard DWARF files, objects, or operations
- Additional objects or operations
- object
- In object-oriented design or programming, a concrete realization
(instance) of a class that consists of data and the operations associated
with that data. An object contains the instance data that is defined
by the class, but the class owns the operations that are associated
with the data. Objects described in this document are generally a
type definition or data structure, a container for a callback function
prototype, or items that have been added to a DWARF file.
- operation
- In object-oriented design or programming, a service that can be
requested at the boundary of an object. Operations can modify an object
or disclose information about an object.
- Technical support
Additional technical support
is available from the z/OS XL
C/C++ Support page. This page provides a portal with search capabilities
to a large selection of technical support FAQs and other support documents.
You can find the z/OS XL C/C++
Support page on the Web at: www.ibm.com/software/awdtools/czos/support/.
If
you cannot find what you need, you can e-mail: compinfo@ca.ibm.com
For
the latest technical data, business news, and other information about
COBOL, visit the COBOL Cafe at: www.ibm.com/developerworks/rational/community/cafe/cobol.html.
For
information about boosting performance, productivity and portability,
visit the C/C++ Cafe at: www.ibm.com/software/rational/cafe/community/ccpp.