.USE_LINKAGE

   OpenVMS I64 only.

   Establishes a temporary named or anonymous linkage that will
   be used by the compiler for the next CALLS, CALLG, JSB, BSBB,
   or BSBW instruction processed in lexical order. This directive
   is used when the target of the next CALLS, CALLG, JSB, BSBB,
   or BSBW instruction is not a name, but a run-time value (for
   example, CALLS #0, (R6)). When the compiler sees the next
   CALLS, CALLG, JSB, BSBB, or BSBW instruction, it will use the
   associated linkage to decide which registers need to be saved and
   restored around the call. After the instruction is processed, the
   temporary linkage is reset to null.

   Format

     .USE_LINKAGE  [linkage_name] [,input] [,output] [,scratch]

                   [,preserve]
 

Additional information available:

Parameters