On Alpha and Integrity server systems, allows a process to create
    a memory-resident global demand-zero section and to map a section
    of its address space to the global section. Shared page table
    sections can also be created.

    This service accepts 64-bit addresses.

    Format

      SYS$CRMPSC_GDZRO_64  gs_name_64 ,ident_64 ,prot ,length_64

                           ,region_id_64 ,section_offset_64 ,acmode

                           ,flags ,return_va_64 ,return_length_64

                           [[[[,start_va_64] ,map_length_64]

                           ,reserved_length_64] ,rad_mask]

    C Prototype

      int sys$crmpsc_gdzro_64  (void *gs_nam_64, struct _secid

                               *ident_64, unsigned int prot, unsigned

                               __int64 length_64, struct _generic_64

                               *region_id_64, unsigned __int64

                               section_offset_64, unsigned int

                               acmode, unsigned int flags, void

                               *(*(return_va_64)), unsigned __int64

                               *return_length_64,...);