$PROBK | Back to Index page

| Prolog Control Block Contents $PROBK 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.

$PROBK Prolog | Top of page

     NAME       : LGRPROBK
     DESCRIPTION: Relocation mapping for HCPPROBK
     DSECT      : $PROBK
     FUNCTION   : LGRPROBK describes those fields of the PROBK that
                  will be migrated to the destination system during
                  guest relocation.
     LOCATED BY : This is a mapping of the RDODATA area within the
                  RDOBK during guest relocation.
     RELOCATION CONSIDERATIONS : This control block is used during live guest
                  relocation.  It is used to relocate a control block
                  defined in a corresponding HCP COPY file.  Any
                  fields or bits defined in HCPPROBK which are
                  required on the destination system must be defined
                  here, and code must be added to migrate the field
                  or bit during a relocation.

$PROBK Control Block Content | Top of page

     $PROBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      $PROBK         Relocation mapping for HCPPROBK
              00000001       $PRO_VER       1 Mapping version number
    0000    0 Signed       2 $PRO_HDRL      Header length (in bytes)
    0002    2 Signed       2 $PRO_BITL      Length of mapped bits (in bytes)
    0004    4 Signed       4 *              Reserved for future use
              00000008       $PRO_HDLN      *-$PROBK Length of header (bytes)
          Bit map: Contains the PROBK flags that are subject to
                   relocation. These bits are defined sequentially,
                   regardless of how they are defined in HCPPROBK.
                   This yields a consistent mapping that ensures
                   compatibility when a guest is relocated between
                   systems at differing service levels.
                   Names in the comments column indicate the control
                   block byte which contains the flag. This name is
                   subject to change if the flag definition changes.
             ====> NEVER change bits which already exist here.
             ====> NEVER change the order of bits in this section.
             ====> ALWAYS add new bits at the end of this section,
                   together with new flag bytes as required.
    0008    8 Signed       2 $PRO_BITS (0)  Bit map area
    0008    8 Bitstring    1 $PRO0
              1... ....      $PROIPL        X'80' $PROIPL PROFLGS
              00000001       $PRO_BLEN      *-$PRO_BITS Length of bit map
                                            area
          Data:    Contains all HCPPROBK data that is subject to
                   relocation, except for flag bits, which are
                   handled separately.
                   All fields are defined as XLnn to avoid alignment
                   warnings and to pack the data efficiently.
             ====> NEVER change fields which already exist here.
             ====> NEVER change the order of fields in this section.
             ====> ALWAYS add new fields at the end of this section.
                   together with new flag bytes as required.
          Most of the fields listed here are copied as-is to the
          destination system, but some require special processing.
          Such fields are marked with '**'.
    0009    9 Bitstring    1 $PRO_DATA (0)  Start of data map
    0009    9 Bitstring    4 $PROMSPTR      -> Pointer to queue of err msg
                                            buffers
    000D   13 Bitstring    4 $PRO_MSTL      ** Length of text in 1st chained
                                            MSTBK
    0011   17 Bitstring    1 $PROCOUNT      Number of attempted re-IPLs
    0012   18 Bitstring    4 $PROTOD        ** TOD of last attempted re-IPL
    0016   22 Bitstring    2 $PRODLEN       Length of variable error data
    0018   24 Bitstring    1 $PROCODE       Error code
    0019   25 Bitstring   17 $PRODATA       Variable error data
              0000002A       $PRO_LEN       *-$PROBK Total length, in bytes
              00000006       $PRO_SZ        ($PRO_LEN+7)/8 Size in
                                            doublewords

$PROBK Storage Layout | Top of page

    *** $PROBK - Relocation mapping for HCPPROBK
    *
    *     +-------------+-------------+---------------------------+
    *   0 | $PRO_HDRL   | $PRO_BITL   |///////////////////////////|
    *     +------+------+-------------+------+--------------------+
    *   8 |$PRO0 |        $PROMSPTR          |    $PRO_MSTL-      |
    *     +------+------+--------------------+------+-------------+
    *  10 |-(00D)|(011) |         $PROTOD           |  $PRODLEN   |
    *     +------+------+---------------------------+-------------+
    *  18 |:OCODE|                                                |
    *     +------+                                                |
    *     |                       $PRODATA                        |
    *     |             +-----------------------------------------+
    *     |             | 2A
    *     +-------------+
    *
    *** $PROBK - Relocation mapping for HCPPROBK

$PROBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    $PRO_BITL      0002
    $PRO_BITS      0008
    $PRO_BLEN      0008 00000001
    $PRO_DATA      0009
    $PRO_HDLN      0004 00000008
    $PRO_HDRL      0000
    $PRO_LEN       0019 0000002A
    $PRO_MSTL      000D
    $PRO_SZ        0019 00000006
    $PRO_VER       0000 00000001
    $PROCODE       0018
    $PROCOUNT      0011
    $PRODATA       0019
    $PRODLEN       0016
    $PROIPL        0008 80
    $PROMSPTR      0009
    $PROTOD        0012
    $PRO0          0008

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:32:11 EDT.
Copyright IBM Corporation, 1990, 2020