DSLBK Back to Index page
 
Prolog 
Control Block Contents 
   DSLBK 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.


  DSLBK Prolog Top of page
 
 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 Top of page
 

 DSLBK DSECT Top of page
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 Top of page
 
          
*** DSLBK - DISJOINT STORAGE LIST
*
*     +---------------------------+---------------------------+
*   0 |         DSLSTRTH          |         DSLSTRTL          |
*     +---------------------------+---------------------------+
*   8 |         DSLENDH           |         DSLENDL           |
*     +---------------------------+------+--------------------+
*  10 |         DSLNEXT           |:FLAGS|////////////////////|
*     +---------------------------+------+--------------------+
*  18
*
*** DSLBK - DISJOINT STORAGE LIST
 
 
  DSLBK Cross Reference Top of page
 
 
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
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:49:51 EDT.
Copyright IBM Corporation, 1990, 2022