DTLBK Back to Index page
 
Prolog 
Control Block Contents 
   DTLBK DSECT
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.


  DTLBK Prolog Top of page
 
 NAME       : HCPDTLBK
 DESCRIPTION: DATALINK SOURCE
 DSECT      : DTLBK
 FUNCTION   : A VARIABLE LENGTH BUFFER CONTAINING THE
              DATALINK SOURCE FOR A TRACEID.  EACH BUFFER
              CONTAINS ONE DATALINK.  FOR MULTIPLE
              DATALINKS THE DTLBKS ARE CHAINED.
 LOCATED BY : TRCDTLBK
 CREATED BY : HCPTXF
              - HCPTXH
 DELETED BY : HCPTXD
              - HCPTXF
              - HCPTXP
 RELOCATION CONSIDERATIONS : None
 
 
  DTLBK Control Block Content Top of page
 

 DTLBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure DTLBK DATALINK SOURCE 0000 0 Signed 4 DTLPTR POINTER TO NEXT DTLBK 0004 4 Bitstring 1 DTLSIZE SIZE (IN BYTES) OF THE DATALINK 0005 5 Bitstring 1 DTLIRSIZ LENGTH OF DATALINK INTERNAL REPRESENTATION IN TRCBK 0006 6 Bitstring 1 DTLTYPE Type of DTLBK 1... .... DTLDL X'80' DTLDL DTLBK type is Datalink .1.. .... DTLIF X'40' DTLIF DTLBK type is IF ..1. .... DTLTHEN X'20' DTLTHEN DTLBK type is THEN ...1 .... DTLELSE X'10' DTLELSE DTLBK type is ELSE .... 1... DTLENDIF X'08' DTLENDIF DTLBK type is ENDIF 0007 7 Bitstring 1 * Reserved For IBM Use 0008 8 Signed 2 DTLOFFST Offset into TRCBK of the internal representation of this datalink. 000A 10 Signed 2 * Reserved for IBM Use 000C 12 Signed 4 DTLDISP DATALINK SOURCE
 
 
  DTLBK Storage Layout Top of page
 
          
*** DTLBK - DATALINK SOURCE
*
*     +---------------------------+------+------+------+------+
*   0 |          DTLPTR           |:SIZE |:IRSIZ|:TYPE |//////|
*     +-------------+-------------+------+------+------+------+
*   8 |  DTLOFFST   |/////////////|         DTLDISP           |
*     +-------------+-------------+---------------------------+
*  10
*
*** DTLBK - DATALINK SOURCE
 
 
  DTLBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
DTLDISP        000C
DTLDL          0006 80
DTLELSE        0006 10
DTLENDIF       0006 08
DTLIF          0006 40
DTLIRSIZ       0005
DTLOFFST       0008
DTLPTR         0000
DTLSIZE        0004
DTLTHEN        0006 20
DTLTYPE        0006
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:49:56 EDT.
Copyright IBM Corporation, 1990, 2022