DSLBK - 32-bit CP - V4R4.0

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

#### DSLBK

Prolog

Control Block Contents
DSLBK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

#### DSLBK Prolog

     NAME       : HCPDSLBK
     DESCRIPTION: DISJOINT STORAGE LIST
     DSECT      : DSLBK
     FUNCTION   : A DSLBK IS BUILT FOR EACH AREA OF USER STORAGE
                  REQUESTED TO BE DUMPED.
     LOCATED BY : DSLBK IS A TEMPORARY BLOCK AND IS USUALLY
                  LOCATED BY A POINTER IN A REGISTER
     CREATED BY : HCPNSB HCPVCH HCPVDO HCPVIN HCPVMB HCPVMP
                  HCPVMR
     DELETED BY : HCPVCC HCPVCH HCPVMR

#### DSLBK Control Block Content

#### DSLBK DSECT

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      DSLBK          DISJOINT STORAGE LIST
    0000    0 Address      4 DSLSTRT        ADDRESS OF FIRST PAGE
    0004    4 Address      4 DSLEND         ADDRESS OF LAST PAGE
    0008    8 Address      4 DSLNEXT        ADDRESS OF NEXT BLOCK OR 0 Notes
                                            : DSLDEFN and DSLDCSS bits are
                                            used only for DSLBKs on the
                                            ASDDEFP, ASDDCSSP and ASDSTOR
                                            queues.
    000C   12 Bitstring    1 DSLFLAGS       General Flags
              1... ....      DSLPFXPG       X'80' This DSLBK is a prefix page
              .1.. ....      DSLDEFN        X'40' Defined Storage
              ..1. ....      DSLDCSS        X'20' DSCC Storage
    000D   13 Bitstring    3 *              RESERVED FOR FUTURE IBM USE
              00000002       DSLSIZE        (*-DSLBK+7)/8 BLOCK SIZE IN
                                            DOUBLE WORDS

#### DSLBK Storage Layout

    *** DSLBK - DISJOINT STORAGE LIST
    *
    *     +---------------------------+---------------------------+
    *   0 |         DSLSTRT           |          DSLEND           |
    *     +---------------------------+------+--------------------+
    *   8 |         DSLNEXT           |:FLAGS|////////////////////|
    *     +---------------------------+------+--------------------+
    *  10
    *
    *** DSLBK - DISJOINT STORAGE LIST

#### DSLBK Cross Reference

    Symbol         Dspl Value
    -------------- ---- -----
    DSLDCSS        000C 20
    DSLDEFN        000C 40
    DSLEND         0004
    DSLFLAGS       000C
    DSLNEXT        0008
    DSLPFXPG       000C 80
    DSLSIZE        000D 00000002
    DSLSTRT        0000

This information is based on z/VM V4R4.0. Last updated on 29 Jul 2003 at 15:28:30 EDT.
Copyright IBM Corporation, 1990, 2003