Release Date 25/10/2022
Deadline 06/11/2022, 23:59 hours


This assignment is the last part of a multi part project to write an optimizing compiler for Minijava. In this assignment, we start with programs in miniRA format and translate them to MIPS Assembly.

Use JTB and JavaCC and write in Java one or more visitors which translate miniRA programs to assembly form. Your main file should be called P5.java, if A.RA contains a program to be assembled then

$ javac P5.java
$ java P5 < A.miniRA > A.s

should create A.s in MIPS assembly form and is semantically equivalent to A.miniRA. Note, your program must take input from standard input and write to standard output (so that we can use redirection).

To check that a program is in miniRA form, you could use the mips.jj to build a parser. To ensure that your generated .s program is semantically equivalent to the miniRA program, you can use the MIPS simulator available at site to compare the output of A.miniRA with the output of the .s program generated by your code generator.

Note: Please do not alter the directory structure of RollN0_P5. Only edit GJDepthFirst.java and P5.java

Resources

The source files are on Github.

Get the source by cloning the entire repo:

$ git clone https://github.com/kayceesrk/cs3300_m22

If you have already cloned the repo, you can get the latest updates by:

$ cd cs3300_m22 # go to the cloned repo
$ git pull

The miniRA grammar specification is BNF-miniRA.

The mips grammar specification is mips_specifications.

Submission

Rename the folder RollN0_P5 with your roll number. For example, if your roll number is cs99b999, then the folder should be named cs99b999_P5. Remove all the .class files before submission. For example, you can do:

$ cd cs99b999_P5
$ find . -name "*.class" | xargs rm

Then produce the compressed gzip archive as follows:

$ tar cvzf cs99b999_P5.tar.gz cs99b999_P5

Submit the .tar.gz file.

Note: You should thoroughly test your code. Some sample miniRA programs are provided for testing. Create positive and negative tests per feature and test your code before submission. Please ensure that there are no compilation errors. If there are compilation errors, that code will yield zero marks.