VMS Help MACRO, /MIGRATION, Compiler Directives, .JSB ENTRY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Declares the entry point of a JSB routine to the compiler. This
    entry declaration will save and restore the full 64 bits of any
    registers (except R0 and R1) that are modified by the routine and
    are not declared as scratch or output. See also .JSB32_ENTRY.

    Format

      .JSB_ENTRY  [input] [,output] [,scratch] [,preserve]

  Additional Information (explode) :

• Parameters