This article describes how to symbolically debug non-Language Environment® (LE) assembler applications running on z/OS®. When LE is not active, you can debug only assembler, disassembly, or OS/VS COBOL programs because debugging programs written in other languages requires an active LE.
The article is intended for application programmers who are familiar with Eclipse, Rational® Developer for System z®, and assembler. You also need a rudimentary understanding of job control language (JCL) and JCL procedures.
This article explains how to write an assembler program, build the executable, and symbolically debug the assembler application using Rational Developer for System z V7.5 and Debug Tool V9.1 when LE is not active. When symbolically debugging the assembler application, you can view and change the values of the variables within the assembler application using the names of the variables, animate the step-by-step execution of the assembler routine while viewing the assembler listing file, and establish breakpoints within the assembler listing file.
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