(I64 only.) The Find Address of the Unwind Information Block
    Operating System-Specific Data Area routine finds the address of
    the unwind information block operating system-specific data area.

    Format

      LIB$I64_GET_UNWIND_OSSD   pc_value, unwind_ossd_p

1  –  Returns

    OpenVMS usage:cond_value
    type:         longword (unsigned)
    access:       write only
    mechanism:    by value

2  –  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.