z/OS system services and programming considerations

This chapter describes some of the z/OS® system services and program development facilities that assist you in developing your assembler program. It provides the following information:
  • Adding definitions to a macro library.
  • Using cataloged procedures.
  • Overriding statements in cataloged procedures.
  • Saving and restoring general register contents.
  • Ending program execution.
  • Accessing execution parameters.
  • Combining object modules to form a single program module.
  • Modifying program modules.