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C/C++ Dump Analysis

This 3 day course is designed to give an in depth knowledge of dump analysis in the C/C++ environment. The course can be customised to individual customer requirements by including customer dumps, listing and build scripts in the notes and customer dumps for the exercises.

The syllabus is designed for z/TPF developers who have prior z/TPF Dump Analysis experience and understand the layout of a formatted TPF dump. Students should ideally  be proficient in coding programs in C or C++.

Programmers who are required to read and analyse dumps from programs written using C/C++ in a z/TPF environment

Student Numbers
The maximum recommended student to instructor ratio is 12:1

By the end of the course, the delegates will be able, with the aid of course notes to:

List the Register usage within an C Shared Object (CSO)
Identify the failing function, and its component within the CSO.
Use the Listing and .mak output to identify the source code instruction in error.
Use the Listing to identify variables held in registers vs the stack.
Locate function stacks within a dump and identify variable values within the stack.
Identify static variables and global variables in the static stack.
Identify dump locations within a library function.
List the different linkages and parameter lists used in C and C++ programs.

Course Outline


Review of a z/TPF dump and students current knowledge

C/C++ Listing

Breakdown of a Listing
C/C++ Register Usage and Conventions
Understanding the Pseudo Assembler
Understanding the Epilog and Prolog
Function and Program Linkage
Compiling C and C++ - differences

CSO Build

How the CSO is built
Analyse the output from a CSO Build
The layout of the components
Identifying Static variables
Inlining of functions - understanding the listing

Review a dump

Dump Tags
Function stacks and their layout
Identifying variable and parameter values
Using the Link Map information
Heap Storage and its Layout
Implications of different optimisation Levels


Throughout the class there are many exercises involving 
both optimised and non-optimised dumps.

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