Day One

Introduction to the Course

• Interesting Applications
• Coding Notes For Examples in the Class
• Computer Exercise:  Setting Up for the Labs

Defining Elementary Data Items

• General Concerns
• Data Types – zSeries Hardware
• Data Types
  • Character String
  • Packed Decimal
  • Binary Integer – halfword, fullword
  • Floating Point – short, long, extended
  • Addresses
  • Other Data Types – Edited strings, Bit strings, Null terminated strings
• Working With Null Terminated Strings
• Rules for Names
• Computer Exercise:  Defining Elementary Items

Defining Data Aggregates

• Data Aggregates – An Introduction
• Data Alignment
• Defining Aggregates – Assembler, COBOL, PL/I, C
• Alignment – Another Perspective
• Working With Halfword Prefixed Strings
• Computer Exercise:  Defining Aggregates

Accessing PARM data and Setting the Return Code

• How the PARM field is set up
• Accessing the PARM Field – Assembler, COBOL, PL/I, C
• Accessing the PARM Field Using LE Services
• Setting the Return Code
• Computer Exercise:  Getting the Parm and Setting the Return Code

Calling Subroutines Statically

• Assembler
• COBOL
• PL/I
• C
• LE Services: CEEMOUT
• What’s Going On Here?
• Computer Exercise:  Static Calls

Day Two

Object Code

• Modules
• Module Translations
• Sections
• Object Modules
• Object Modules: XOBJ
• Generated Object Modules

Passing Arguments and Receiving Returned Values

• How Arguments Are Passed – Styles and Options
• How Arguments Are Passed – Assembler, COBOL, PL/I, C
• How Arguments Are Passed – Lessons

Receiving Parameters and Setting Return Values

• Mainlines and Subroutines
• Subroutine declarations
• Declaring Parameters
• Parameters – Assembler, COBOL, PL/I, C
• Computer Exercise:  Assemble / compile, bind subroutines

The Program Binder

• Compiles and Binds
• Assemble / Compile and Bind Data Flow
• An Example
• Program Binder PARM Options
• Program Binder Control Statements: ENTRY, NAME
• A Load Module
• Program Binder Control Statements: INCLUDE, LIBRARY, REPLACE
• How The Program Binder Works
• Basic Maintenance Using the Program Binder
• Computer Exercise:  Program Binder and Maintenance

Alternate Entry Points

• Why Have Alternate Entry Points?
• Alternate Entry Points: Assembler, COBOL, PL/I, C
• Alternate Entry Points – How Does It Work?
• Program Binder Control Statement: ALIAS
• Computer Exercise:  Alternate Entry Points

Day Three

External Data

• External Data – Assembler, COBOL, PL/I, C
• External Data – ILC

Calling Subroutines Dynamically

• Dynamic Calls – An Introduction
• Dynamic Calls – Assembler, COBOL, PL/I, C
• Computer Exercise:  Dynamic Calls

AMODE / RMODE Issues

• z/OS Addressing
• Specifying AMODE and RMODE

GOFF – The Generalized Object File Format

More About the Program Binder

• Load Modules vs. Program Objects
• Binder versions
• Binder Parms
• Binder Inputs and Outputs

Multi-Tasking and Program Reusability

• Multi-Tasking
• Dispatching
• Reusable, Reenterable, Refreshable Attributes
• LPA, JPA, LLA
• The Search for Modules