@Override
    public void visit(FunctionCallExpression e) {
        // TODO Auto-generated method stub
//      throw new RuntimeException(
//              "FunctionCallExpression case not implemented");
        int count = 0;
        for(Expression expr : e.getArguments()){
            count +=4;
            //expr.accept(this);
        }
        //buf.append(generateInstruction("subl", "$" + count, "%esp"));
        for(Expression expr : e.getArguments()){
            count -= 4;
            buf.append(generateInstruction("movl","%eax", (count==0?"":count) + "(%esp)"));

            //System.out.println("Just printed moving eax into " + (count==0?"":count) + "(%esp).");

        }
        buf.append(INDENT + "call      _"  + e.getName());
        buf.append(NEWLINE);
    }