WDATA - 64-bit CP - V4R4.0

Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

#### WDATA

Prolog

Control Block Contents
WDATA DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### WDATA Prolog

     Name       : HCPWDATA
     Description: vSIE common DAta area mapping
     DSECT      : WDATA
     Function   : This copy file contains a DSECT used to map (and
                  define) the vSIE common data area.
     Located by : HCPVSDWS is the external symbol which identifies the
                  beginning of the data area which is mapped
                  by this DSECT.
     Created by : HCPWLBBN during system initialization.
     Deleted by : Not deleted.
     Notes      : When this DSECT is COPYed into the HCPWDA module, it
                  generates actual code instead of a DSECT.  This permits
                  the definitions of these fields to be centralized here.

#### WDATA Control Block Content

#### WDATA DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      WDATA          vSIE common DAta area mapping
         Define HCPWDATA control block.
    0000    0 Signed       4 WDANADSO       Null ALDSO. This access-list-
                                            designation-source origin
                                            indicates an
                                            access-list-designation source
                                            (it can be considered to be a
                                            PASTE or a DUCT) which contains
                                            the null ALD.
    0004    4 Signed       4 WDANASTE       Null ASTEO. This
                                            ASN-second-table- entry origin
                                            indicates an ASTE which contains
                                            the null STD, the null ATO, and
                                            the null ATL.
    0008    8 Signed       4 WDANALD        Null ALD. This access-list
                                            designation indicates an small
                                            access list containing all
                                            invalid access-list entries.
    000C   12 Signed       4 WDANATO        Null ATO. This authority-table
                                            origin indicates a small
                                            authority table, and every entry
                                            has a zero secondary-authority
                                            bit. The ATO in this field is
                                            aligned as it would be in the
                                            word that contains the ATO in an
                                            ASTE.
    0010   16 Signed       2 WDANATL        Null ATL. This authority-table
                                            length is the length of the
                                            authority table indicated by
                                            WDANATO. The ATL in this field is
                                            aligned as it would be in the
                                            halfword that contains the ATL in
                                            an ASTE.
    0012   18 Signed       2 *              Reserved for IBM use
    0014   20 Signed       4 *              Reserved for IBM use
    0018   24 Signed       8 WDANASCC       Null ASCE for control registers.
                                            This segment-table designation
                                            indicates a small segment table
                                            containing all invalid entries.
    0020   32 Signed       8 WDANASCA       Null ASCE for ASTEs. This
                                            segment- table designation
                                            indicates a small segment table
                                            containing all invalid entries.
                                            This ASCE is not equal to the
                                            ASCE in WDANASCC, but the STO is
                                            equal to the STO in WDANASCC (the
                                            STL is different).

#### WDATA Storage Layout

    *** WDATA - vSIE common DAta area mapping
    *
    *     +---------------------------+---------------------------+
    *   0 |         WDANADSO          |         WDANASTE          |
    *     +---------------------------+---------------------------+
    *   8 |         WDANALD           |         WDANATO           |
    *     +-------------+-------------+---------------------------+
    *  10 |  WDANATL    |/////////////|///////////////////////////|
    *     +-------------+-------------+---------------------------+
    *  18 |                       WDANASCC                        |
    *     +-------------------------------------------------------+
    *  20 |                       WDANASCA                        |
    *     +-------------------------------------------------------+
    *  28
    *
    *** WDATA - vSIE common DAta area mapping

#### WDATA Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    WDANADSO       0000
    WDANALD        0008
    WDANASCA       0020
    WDANASCC       0018
    WDANASTE       0004
    WDANATL        0010
    WDANATO        000C

This information is based on z/VM V4R4.0. Last updated on 30 Jul 2003 at 13:29:04 EDT.
Copyright IBM Corporation, 1990, 2003