Assembler-Emulator

C language implementation of Assembler and Emulator for a custom assembly language

View Assembly Language » for the language definitions.

About The Project

Diagnoses Label errors - No such Label, Bogus label, etc.
Produces Listing file
Advanced Listing file - Instructions displayed beside each memory
Op-table is created in the form of the struct. Retrieving is done through open-chain hashing.
SET instruction - Assigned a temporary opcode

Process:

• Assembler generates three files - object file (machine readable), listing file and logfile(for errors and warnings)
• The object file is passed into emulator to generate trace, memory dump, memory writes, memory reads, instructions set architecture etc.

Getting Started

Run the assembler using gcc - Produces listing file, object file and log file

gcc asm.c -o asm
./asm filename.asm

Emulator

1. Copy the object file into the directory of emulator and run emu.c

2. gcc emu.c -o emu
   ./emu [options] filename.o

   The following options are available
   -trace   | show instruction trace
   -read    | show memory reads
   -write   | show memory writes
   -before  | show memory dump before execution
   -after   | show memory dump after execution
   -wipe    | wipe written flags before execution
   -isa     | display instruction set architecture

A text file is generated using the option given.

Some example test files and the generated files are given in the respective folders