41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
require "util/list"
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module Arm
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# Arm instruction base class
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# Mostly linked list functionality that all instructions have
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class Instruction
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include Constants
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include Attributed
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include Util::List
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def initialize( source , nekst = nil )
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@source = source
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@next = nekst
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return unless source
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raise "Source must be string or Instruction, not #{source.class}" unless source.is_a?(String) or source.is_a?(Mom::Instruction)
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end
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attr_reader :source
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def total_byte_length
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ret = 0
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self.each{|ins| ret += ins.byte_length}
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ret
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end
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def set_position( position , count )
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Risc::Position.set_position(self,position)
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position += byte_length
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if self.next
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count += 1 #assumes 4 byte instructions, as does the whole setup
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if( 0 == count % 12) # 12 is the amount of instructions that fit into a BinaryCode
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count = 0
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position += 12 # 12=3*4 , 3 for marker,type,next words to jump over
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end
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self.next.set_position( position , count )
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else
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position
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end
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end
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end
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end
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