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
 RELOCATION CONSIDERATIONS : None

DSLBK Control Block Content

DSLBK DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      DSLBK          DISJOINT STORAGE LIST
0000    0 Bitstring    8 DSLSTRTG (0)   ADDRESS OF FIRST Page
0000    0 Signed       4 DSLSTRTH       High word of First Page addr
0004    4 Signed       4 DSLSTRTL       Low word of First Page addr
0008    8 Bitstring    8 DSLENDG (0)    ADDRESS OF LAST Page
0008    8 Signed       4 DSLENDH        High word of Last Page addr
000C   12 Signed       4 DSLENDL        Low word of Last Page addr
0010   16 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.
0014   20 Bitstring    1 DSLFLAGS       General Flags
          1... ....      DSLPFXPG       X'80' DSLPFXPG This DSLBK is a
                                        prefix page
          .1.. ....      DSLDEFN        X'40' DSLDEFN Defined Storage
          ..1. ....      DSLDCSS        X'20' DSLDCSS DSCC Storage
0015   21 Bitstring    3 *              RESERVED FOR FUTURE IBM USE
          00000003       DSLSIZE        (*-DSLBK+7)/8 BLOCK SIZE IN
                                        DOUBLE WORDS

DSLBK Storage Layout

          
*** DSLBK - DISJOINT STORAGE LIST
*
*     +---------------------------+---------------------------+
*   0 |         DSLSTRTH          |         DSLSTRTL          |
*     +---------------------------+---------------------------+
*   8 |         DSLENDH           |         DSLENDL           |
*     +---------------------------+------+--------------------+
*  10 |         DSLNEXT           |:FLAGS|////////////////////|
*     +---------------------------+------+--------------------+
*  18
*
*** DSLBK - DISJOINT STORAGE LIST

DSLBK Cross Reference

Symbol         Dspl Value
-------------- ---- -----
DSLDCSS        0014 20
DSLDEFN        0014 40
DSLENDG        0008
DSLENDH        0008
DSLENDL        000C
DSLFLAGS       0014
DSLNEXT        0010
DSLPFXPG       0014 80
DSLSIZE        0015 00000003
DSLSTRTG       0000
DSLSTRTH       0000
DSLSTRTL       0004