dariiik / mips-simulator

A simple MIPS Simulator that can simulate execution in MIPS for a small subset of instructions.

CSE261 Project 1: MIPS Simulator

More details are in handout

Instructions

There are three functions you need to implement, located in the following two files: parse.py, run.py

1. parse.py

Implement the following parsing functions.

def parse_instr(buffer, index)
def parse_data(buffer, index)

The parse_instr() function is called for every instruction in the input file, and converts them into the instruction type. The instruction type is defined in util.py

The parse_data() function is called for every data field in the input file, and you need to fill the data into the simulated memory. Use the mem_read and mem_write as mentioned in the Hints section below.

There is a helper function you can use to convert binary strings to int variables:

def fromBinary(bits)

2. run.py

Implement the following function:

def process_instruction()

The process_instruction() function is used by the cycle() instruction to execute the instruction at the current PC. Your internal register/memory state should be changed according to the instruction that is pointed to by the current PC.

Hints

• Always use the mem_read(), mem_write() functions when trying to read or write from the simulated memory. This includes your implementation of the load/store functions, but also when you are loading data region to the simulated memory.
• You may generate input files of very simple instructions to check the functionality of your simulator. For example, add $1, $1, 5. Then you can check if the R1 of your simulator has been incremented by 5, etc..