Stack Virtual Machine

A minimal stack-based process virtual machine written in Python.

• Arithmetic Operations: ADD, SUB, MUL, DIV, MOD, NEG
• Stack Operations: PUSH, POP, DUP, SWAP
• Comparisons: EQ, ST, GT
• Control Flow: JMP, JZ, JNZ
• PRINT, HALT

Usage

chmod +x ./vm.py
./vm.py <program>

Specifics

I implemented a simple parser to be able to write code in files and execute them inside the VM.

Lines starting with a semicolon (;) will be treated as comments.

Programs must end with a HALT instruction.

TODO

• Finish replacing OPCODES with real bytecode
• Add memory
• Implement CALL and RET operations
• Add a call stack