Page 96 - DCAP507_SYSTEM_SOFTWARE

System Software Nisha Sethi, Lovely Professional University

Notes Unit 7: Macro Language

CONTENTS

Objectives
Introduction
7.1 Macro Instructions
7.1.1 Macro Processor
7.1.2 Format of Macro Definition

7.1.3 Basic Macro Processor Functions
7.1.4 Macro Processor Algorithm and Data Structures
7.2 Machine Independent Macro Processor Features

7.2.1 Concatenation of Macro Parameter
7.2.2 Generation of Unique Labels
7.2.3 Conditional Macro Expansion
7.2.4 Keyword Macro Parameters
7.3 Implementation

7.3.1 Implementation of Conditional Macro Expansion (IF-ELSE-ENDIF Structure)
7.3.2 Implementation of Conditional Macro Expansion (WHILE ENDW Structure)
7.4 Summary

7.5 Keywords
7.6 Review Questions
7.7 Further Readings

Objectives

After studying this unit, you will be able to:

 Understand the concept of macro instructions
 Discuss features of macro processors

 Understand the implementation of macro processors
Introduction

In this unit you will understand the concept of macro instructions which has been replaced by
macro processor. You will discuss macro processor functions, algorithms, and data structures.
Also you will study various features and implementations of macro processor with their
respective examples.

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