Offline 1: Symbol Table Manager

Instructions: [PDF]

Implementation: cpp [Code]

Offline 2: Lexical Analysis

Instructions: [PDF]

Implementation: flex [Code]

Offline 3: Syntax & Semantic Analysis

Instructions: [PDF]

Implementation: bison [Code]

Offline 4: Intermediate Code Generation

Implementation: [PDF]

Implementation: bison + emu8086 [Code]

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Install

• flex
• bison
• emu8086 (with wine on linux)

Script

• script.sh file

#!/bin/bash

# file names (without extensions)
SCANNER_FILE=1705039
PARSER_FILE=1705039

# compiling yacc file
bison -d -y -o $PARSER_FILE.cpp $PARSER_FILE.y
g++ -w -c -o y.o $PARSER_FILE.cpp

# compiling lex file
flex -o $SCANNER_FILE.cpp $SCANNER_FILE.l
g++ -w -c -o l.o $SCANNER_FILE.cpp

# linking object files
g++ -o a.out y.o l.o -lfl

# run executable on input file
./a.out $1

# open with emu8086 (with wine)
cp ./optimized_code.asm ~/.wine/drive_c/code.asm
wine ~/.wine/drive_c/emu8086/emu8086.exe "C:\\code.asm"

• then run $ ./script.sh input.c

Input

• input.c - contains the c code to be compiled

Output:

• a.o - final object file
• log.txt - log grammar rules with code segments
• error.txt - log errors with line numbers
• code.asm - assembly (MASM) code
• optimized_code.asm - optimized assembly code