SYSTEMS SOFTWARE

UNIT-1 :

1 Language Processors:
           Introduction
           Language Processing Activities
           Fundamentals of Language Processing & Language Specification
           Language Processor Development Tools.

2 Data Structures for Language Processing:
           Search Data structures
           Allocation Data Structures.

3 Scanning & Parsing.

           Ref: DMD: Chapter 1, 2 & 3.

UNIT-II :

2.1  Assemblers:
            Elements of Assembly Language Programming
            A Simple Assembly Scheme,
            Pass Structure of Assemblers,
            Design of a Two Pass Assembler
            A single pass Assembler for IBM PC.

2.2  Macros and Macro Processors:
           Macro Definition and Call
           Macro Expansion
           Nested Macro Calls
           Advanced Macro Facilities
           Design of a Macro Preprocessor.

2.3  Linkers:
            Relocation and Linking Concepts
            Design of a Linker
            Self-RelocatingPrograms
            A Linker for MS-DOS
            Linking for Overlays
            Loaders.

2.4  Software Tools:
           Software Tools for Program Development
           Editors
           Debug Monitors
           Programming Environments
           User Interfaces.

Ref: DMD: Chapters 4, 5, 7 & 8.

UNIT-III :

Compilers: 

3.1 Statement of Problem:
           Recognizing Basic Elements
           Recognizing Syntactic Units and Interpreting Meaning
           Intermediate form
           Arithmetic statements
           Non-Arithmetic statements
           Non-executable statements
           Storage Allocation
           Code Generation
           Optimization (Machine-independent)
           Optimization (Machine Dependent)
           Assembly Phase
           General Model of the Compiler

3.2 Phases of the Compiler:
           Lexical Phase
           Syntax Phase
           Interpretation Phase
           Optimization
           Storage Assignment
           Code Generation
           Assembly Phase
           Passes of the Compiler.

3.3 Data structures:
           Introduction
           Implementation
           Recursion
           Call & Return Statements
           Storage Classes- Static, Automatic, External Control & Based Storage.     
           Implementation- Block structure, Non-local Go To’s, Interrupts, Pointers.

3.4 Interpreters:
           Use & Overview
           Pure & Impure Interpreters