JavaToARM

Welcome!

This project is a compiler that converts Java programs to ARMv7 instructions.

Requires Java 15 and Gradle

How to Use

Step 1. clone this repository

Step 2. cd to the project directory

Step 3. Build

gradle build

Step 4. Run the program to compile your .java file

java -cp build/classes/java/main/ javatoarm.JavaToARM "path/to/the_file_to_compile.java" [Memory Size (in MB) (Optional)]

Suggested ARMv7 Simulator: https://cpulator.01xz.net/?sys=arm

Samples

Some sample test files included under resources/:

• Test1.java
• String.java from Java Standard Library

Features

Front-end

• Support most Java syntax (Everything in String.java)

Back-end

• Supported data types: int, boolean, and arrays
• Branching
  • if-else
  • for
  • while
  • do-while
• Function call
• Complex expression
• Mini malloc

TODOs

• Floating-point numbers
• Class fields
• Switch statement
• Class instances
• String
• Improve JavaCode.getUniqueID
• Static type checking
• Fix ARMSubroutine.addLogicalOperation