EVTBK | Back to Index page

| Prolog Control Block Contents EVTBK 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.

EVTBK Prolog | Top of page

     NAME       : HCPEVTBK
     DESCRIPTION: ANCHOR FOR PROCESSOR LOCAL WORKAREAS
     DSECT      : EVTBK
     FUNCTION   : ANCHOR FOR PROCESSOR LOCAL WORKAREAS FOR
                  DATATRACE TYPE IO, TYPE DATA, AND TYPE LAN
                  EVENT HANDLERS
     LOCATED BY : PFXEVTBK
     CREATED BY : HCPTXW
     DELETED BY : HCPTXW
     RELOCATION CONSIDERATIONS : None

EVTBK Control Block Content | Top of page

     EVTBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      EVTBK          ANCHOR FOR PROCESSOR LOCAL WORKAREAS
    0000    0 Address      4 EVTCONBF       ADDR OF DTFBK PAGE
    0004    4 Address      4 EVTIOWK        ADDR OF IO TRACETYPE WORKAREA
    0008    8 Address      4 EVTDTWK        ADDR OF DATA TRACETYPE WORKAREA
    000C   12 Address      4 EVTLNWK        ADDR OF LAN TRACETYPE WORKAREA
    0010   16 Address      4 EVTTSRSV       ADDR OF HCPTSR STATIC SAVEAREA
    0014   20 Address      4 *              Reserved for IBM
    0018   24 Address      4 EVTBMSSV       Addr of HCPBMS static savearea
    001C   28 Address      4 *              Reserved for IBM
              00000020       EVTSIZEB       (*-EVTBK) EVTBK SIZE IN BYTES
              00000004       EVTSIZE        (*-EVTBK+7)/8 EVTBK SIZE IN
                                            DOUBLEWORDS

EVTBK Storage Layout | Top of page

    *** EVTBK - ANCHOR FOR PROCESSOR LOCAL WORKAREAS
    *
    *     +---------------------------+---------------------------+
    *   0 |         EVTCONBF          |         EVTIOWK           |
    *     +---------------------------+---------------------------+
    *   8 |         EVTDTWK           |         EVTLNWK           |
    *     +---------------------------+---------------------------+
    *  10 |         EVTTSRSV          |///////////////////////////|
    *     +---------------------------+---------------------------+
    *  18 |         EVTBMSSV          |///////////////////////////|
    *     +---------------------------+---------------------------+
    *  20
    *
    *** EVTBK - ANCHOR FOR PROCESSOR LOCAL WORKAREAS

EVTBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    EVTBMSSV       0018
    EVTCONBF       0000
    EVTDTWK        0008
    EVTIOWK        0004
    EVTLNWK        000C
    EVTSIZE        001C 00000004
    EVTSIZEB       001C 00000020
    EVTTSRSV       0010

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:28:07 EDT.
Copyright IBM Corporation, 1990, 2020