as: IA-64-Relocs

 
 9.16.2.4 Relocations
 ....................
 
 In addition to the standard IA-64 relocations, the following relocations
 are implemented by 'as':
 
 '@slotcount(V)'
      Convert the address offset V into a slot count.  This pseudo
      function is available only on VMS. The expression V must be known
      at assembly time: it can't reference undefined symbols or symbols
      in different sections.