PSIBK Back to Index page
 
Prolog 
Control Block Contents 
   PSIBK 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.


  PSIBK Prolog Top of page
 
 NAME       : HCPPSIBK
 DESCRIPTION: Previous System Image block
 DSECT      : PSIBK
 FUNCTION   : Defines a mapping for an area of storage that
              contains information saved over a bounce when
              the new image is not same version, release,
              modification level, and architecture as the
              previous running system.
 LOCATED BY : Entry Point HCPLODPS is where it exists.
              Temporarily exists in HCPBOU's work page during
              bounce processing.
 CREATED BY : HCPBOU  Creates a PSIBK with information about the
              system that was running.
              HCPLOD  Creates a PSIBK from the one passed by HCPBOU
              or creates a PSIBK on its own if
              HCPBOU does not pass one (bounce from old
              version of CP).
 DELETED BY : Never deleted. Storage is located within HCPLOD.
 SERIALIZED : Used only during single-threaded
              initialization and termination processing.
 RELOCATION CONSIDERATIONS : None
 COMMENTS   : If PSINAME is not "HCPPSIBK", the rest of the block
              is not valid, which means that this was a system IPL
              from the system console.
              If PSIABEND is zero, the restart was because of a
              SHUTDOWN REIPL command.
 
 
  PSIBK Control Block Content Top of page
 

 PSIBK DSECT Top of page
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure PSIBK Previous System Image block 0000 0 Character 8 PSINAME Eyecatcher for PSI block; equal to "HCPPSIBK" 0008 8 Character 6 PSIVERSN PRLVERSN from previous system 000E 14 Bitstring 2 PSIRSV1 Reserved for IBM use 0010 16 Bitstring 4 PSIABEND PFXABEND from previous system 0014 20 Signed 4 PSISDTIM Previous system shutdown time 0018 24 Bitstring 11 PSIDPID Previous system path group ID 0023 35 Bitstring 17 PSIRSV2 Reserved for IBM use 00000034 PSISIZEB *-PSIBK Length of PSIBK in bytes 00000007 PSISIZED (*-PSIBK+7)/8 Length of PSIBK in DWs
 
 
  PSIBK Storage Layout Top of page
 
          
*** PSIBK - Previous System Image block
*
*     +-------------------------------------------------------+
*   0 |                       PSINAME                         |
*     +-----------------------------------------+-------------+
*   8 |                PSIVERSN                 |  PSIRSV1    |
*     +---------------------------+-------------+-------------+
*  10 |         PSIABEND          |         PSISDTIM          |
*     +---------------------------+---------------------------+
*  18 |                       PSIDPID                         |
*     |                    +----------------------------------+
*  20 |                    |                                  |
*     +--------------------+                                  |
*     |                       PSIRSV2                         |
*     |                           +---------------------------+
*     |                           | 34
*     +---------------------------+
*
*** PSIBK - Previous System Image block
 
 
  PSIBK Cross Reference Top of page
 
 
Symbol         Dspl Value
-------------- ---- -----
PSIABEND       0010
PSIDPID        0018
PSINAME        0000
PSIRSV1        000E
PSIRSV2        0023
PSISDTIM       0014
PSISIZEB       0023 00000034
PSISIZED       0023 00000007
PSIVERSN       0008
 
This information is based on z/VM 7.3.0 Last updated on 22 Jun 2022 at 15:53:44 EDT.
Copyright IBM Corporation, 1990, 2022