Szkolenie Advanced Assembler Language Coding Workshop

This course provides instruction and practice in the use of the more complex S/390 Assembler Language facilities for the experienced assembler language programmer. The course includes a discussion of standard linkage conventions, use of BSAM/QSAM and selected system macros, the macro definition language, and reentrant coding considerations.

Emphasis is placed on enhancing skills in problem resolution through analysis of more complex system-provided dumps.

Profil uczestnika

This course is designed for application programmers and beginning system programmers who code, maintain, and debug application support programs or subroutines written in S/390 assembler language.

Agenda

Day 1

• Welcome
• Unit 1: Review
• Unit 2: Assembler instructions
• Unit 3: Linkage
• Unit 4: LE date/time handling
• Exercise 1: PARM handling and search

Day 2

•  Lab review
• Unit 5: Access methods: BSAM/QSAM
• Exercise 2: File handling

Day 3

• Lab review
• Unit 6: Assembler compile-time options
• Unit 7: SNAP dumps
• Unit 8: Macros and the Conditional Assembly Language
• Exercise 3: Macro modification

Day 4

• Lab review
• Unit 9: Miscellaneous instructions
• Unit 10: Floating point data
• Unit 11: Reentrant coding
• Class wrap-up

Wymagane przygotowanie uczestników

Code and debug simple S/390 assembler language programs

Zagadnienia

• Identify data management considerations and access methods
• Code assembler language programs which:
  • Conform to standard linkage conventions using save area chaining
  • Define and use BSAM/QSAM datasets through standard I/O macros
• Define and execute user macros which contain:
  • Positional and/or keyword parameters
  • Fixed or variable entry parameter lists
  • Conditional assembly logic
• Use variable length storage operations (that is, EX, MVCL, and so on)
• Employ more complex instructions (that is, TR, TRT, BXLE, and so on)
• Access JCL parameter data
• Employ LE date/time handling services
• Identify reentrant coding considerations and dynamic storage acquisition

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