Contents

require "rips/instructions/instruction"

module Rips
  module Instructions

    class Sub < Instruction

      attr_reader :variables, :length

      # @variables: types of instruction's variables
      # @length: length in bits for each variable
      def initialize
        super("sub",Formats::DFormat.new(0b0011))
        @variables = [Variables::Register.new, Variables::Register.new, Variables::Register.new]
        @length = {r3:4, r2:4, r1:4, op:4}
      end

      # Swap subtractor
      def set_arguments (args)
        args[1], args[2] = args[2], args[1]
        super
      end      
    end
  end  
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
rips-0.1.1	lib/rips/instructions/sub.rb
rips-0.1.0	lib/rips/instructions/sub.rb
rips-0.0.8	lib/rips/instructions/sub.rb
rips-0.0.7	lib/rips/instructions/sub.rb
rips-0.0.6	lib/rips/instructions/sub.rb