Argument

 

pc_value

   OpenVMS usage:PC value
   type:         quadword
   access:       read
   mechanism:    by reference

   Address of a location that contains the PC value. pc_value
   is used to find the unwind information block and the unwind
   information block operating system-specific data area address.
 

unwind_ossd_p

   OpenVMS usage:address
   type:         quadword
   access:       write
   mechanism:    by reference

   Address of a quadword to receive the address of the operating
   system-specific data area.