WDATA Back to Index page
Control Block Contents 
Storage Layout 
Cross Reference (Contains links to field and bit definitions)
Programming Interface Information:
This information is NOT intended to be
used as Programming Interfaces of z/VM.

  WDATA Prolog Top of page
 DESCRIPTION: VSIM common DAta area mapping
 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.
 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 Top of page

 WDATA DSECT Top of page
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 Top of page
*** 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 Top of page
Symbol         Dspl Value
-------------- ---- -----
WDANADSO       0000
WDANALD        0008
WDANASCA       0020
WDANASCC       0018
WDANASTE       0004
WDANATL        0010
WDANATO        000C
This information is based on z/VM 6.3.0 Last updated on 22 May 2013 at 13:56:23 EDT.
Copyright IBM Corporation, 1990, 2013