Method: Rex::Poly::Machine#variable_value

Defined in:
lib/rex/poly/machine/machine.rb

#variable_value(name, size = nil) ⇒ Object

Resolve a variable name into its currently assigned register value.



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# File 'lib/rex/poly/machine/machine.rb', line 456

def variable_value( name, size=nil )
  # Sanity check we this variable has been created
  if( not @variables.has_key?( name ) )
    raise RuntimeError, "Unknown register '#{name}'."
  end
  # Pull out its current register value if it has been assigned one
  regnum = @variables[ name ]
  if( not regnum )
    regnum = @reg_available.pop
    if( not regnum )
      raise RuntimeError, "Unable to assign variable '#{name}' a register value, none available."
    end
    # and add it to the consumed list so we can track it later
    @reg_consumed << regnum
    # and now assign the variable the register
    @variables[ name ] = regnum
  end
  # resolve the register number int a string representation (e.g. 0 in x86 is EAX if size is 32)
  return _register_value( regnum, size )
end