Implement execution for JMP

Author: Joon-Mo Yang

vm/src/executor.rs

@@ -125,7 +125,9 @@ pub fn execute(
  Instruction::Nop => {}
  Instruction::Not => unimplemented!(),
  Instruction::Eq => unimplemented!(),
- Instruction::Jmp(..) => unimplemented!(),
+ Instruction::Jmp(val) => {
+ pc += *val as usize;
+ }
  Instruction::Jnz(..) => unimplemented!(),
  Instruction::Jz(..) => unimplemented!(),
  Instruction::Push(val) => stack.push(Item(vec![*val]))?,