WDATA

Prolog  

Control Block Contents  
   WDATA DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

WDATA Prolog

 NAME       : HCPWDATA
 DESCRIPTION: VSIM common DAta area mapping
 DSECT      : WDATA
 FUNCTION   : This copy file contains a DSECT used to map (and
              define) the VSIM 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.
 RELOCATION CONSIDERATIONS : None
 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          VSIM 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 - VSIM common DAta area mapping
*
*     +---------------------------+---------------------------+
*   0 |         WDANADSO          |         WDANASTE          |
*     +---------------------------+---------------------------+
*   8 |         WDANALD           |         WDANATO           |
*     +-------------+-------------+---------------------------+
*  10 |  WDANATL    |/////////////|///////////////////////////|
*     +-------------+-------------+---------------------------+
*  18 |                       WDANASCC                        |
*     +-------------------------------------------------------+
*  20 |                       WDANASCA                        |
*     +-------------------------------------------------------+
*  28
*
*** WDATA - VSIM common DAta area mapping

WDATA Cross Reference

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