Class: Fisk::UnresolvedRIPInstruction

Inherits:
Object
  • Object
show all
Includes:
InstructionPredicates
Defined in:
lib/fisk.rb

Instance Method Summary collapse

Methods included from InstructionPredicates

#comment?, #has_temp_registers?, #jump?, #label?, #lazy?

Constructor Details

#initialize(insn, form, operands) ⇒ UnresolvedRIPInstruction 



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# File 'lib/fisk.rb', line 402

def initialize insn, form, operands
  @insn      = insn
  @form      = form
  @operands  = operands
  @retry     = false
  @saved_pos = 0
end

Instance Method Details

#encode(buffer, labels) ⇒ Object 



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# File 'lib/fisk.rb', line 412

def encode buffer, labels
  # Use dummy values for any unresolvable operands
  operands = @operands.map do |op|
    if op.rip? && op.unresolved?
      # Try resolving the operands
      if labels.key?(op.displacement.name)
        Registers::Rip.new labels[op.displacement.name] - @saved_pos
      else
        Registers::Rip.new 0x0CAFE
      end
    else
      op
    end
  end

  @form.encodings.first.encode buffer, operands
  @saved_pos = buffer.pos
end

#retry? ⇒ Boolean 



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# File 'lib/fisk.rb', line 410

def retry?; true; end