tudorgk/ap-assignment1

The virtual machine, MicroStackMachine (MSM), consists of: a program counter (PC), a dynamically allocated number of integer registers, and a stack of integers. A program for the MSM is a zero-indexed sequence of instructions. The execution of a program in the MSM might halt with an error.

AP-Assignment1

The virtual machine, MicroStackMachine (MSM), consists of: a program counter (PC), a dynamically allocated number of integer registers, and a stack of integers. A program for the MSM is a zero-indexed sequence of instructions. The execution of a program in the MSM might halt with an error.

SYNOPSIS

Example of usage:

#####Testing in HUNIT

user:shell$ ghc testing-msm.hs 
user:shell$ ./testing-msm

#####Running in ghci

ghci> runMSM [NEWREG 0, PUSH 1, DUP, NEG, ADD, PUSH 40, STORE, PUSH 2, PUSH 0, LOAD, ADD, HALT]

DESCRIPTION

For testing I've used HUnit. I've wrote some basic unit test that check for the output of certain program instructions. Please install testpack as well in order to assert the error.

I've figured out how to extract the last element from the stack :). The runMSM function takes care of that. If the left side is returned I display an error

I've modified the stack manipulation functions so that they use each other (for ex. dup function uses push and pop respectively)