$SIEBK | Back to Index page

| Prolog Control Block Contents $SIEBK 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.

$SIEBK Prolog | Top of page

     NAME       : LGRSIEBK
     DESCRIPTION: Relocation mapping for HCPSIEBK
     DSECT      : $SIEBK
     FUNCTION   : LGRSIEBK describes those fields of the SIEBK 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 HCPSIEBK 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.

$SIEBK Control Block Content | Top of page

     $SIEBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      $SIEBK         Relocation mapping for HCPSIEBK
              00000002       $SIE_VER       2 Mapping version number
    0000    0 Signed       2 $SIE_HDRL      Header length (in bytes)
    0002    2 Signed       2 $SIE_BITL      Length of mapped bits (in bytes)
    0004    4 Signed       4 *              Reserved for future use
              00000008       $SIE_HDLN      *-$SIEBK Length of header (bytes)
          Bit map: Contains the SIEBK flags that are subject to
                   relocation. These bits are defined sequentially,
                   regardless of how they are defined in HCPSIEBK.
                   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 $SIE_BITS (0)  Bit map area
    0008    8 Bitstring    1 $SIE0
              1... ....      $SIEESAME      X'80' $SIEESAME SIEMODEX Notes :
                                            Although SIEXA is no longer
                                            defined in SIEBK, it is possible
                                            that we will relocate to a system
                                            where it is still needed (CP
                                            continued to use the bit for its
                                            own purposes long after it had
                                            become obsolete in the
                                            architecture). Thus, we will
                                            leave the definition in place
                                            here for use by HCPRLG.
              .1.. ....      $SIEXA         X'40' $SIEXA SIEMODE
              ..1. ....      $SIEECMVP      X'20' $SIEECMVP SIEECA0
              ...1 ....      $SIEECVEC      X'10' $SIEECVEC SIEECA1 do not
                                            reuse this bit.)
              00000001       $SIE_BLEN      *-$SIE_BITS Length of bit map
                                            area
          Data:    Contains all HCPSIEBK 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.
    0009    9 Bitstring    1 $SIE_DATA (0)  Start of data map
    0009    9 Bitstring    4 $SIEPREFX      Guest prefix register value
    000D   13 Bitstring    8 $SIECPUTM      Guest CPU timer value
    0015   21 Bitstring    8 $SIECKC        Guest clock comparator value
    001D   29 Bitstring    8 $SIEEPOCH      Guest time-of-day epoch
    0025   37 Bitstring    2 $SIEICPUA      Virtual CPU address (bits 10-15)
    0027   39 Bitstring    1 $SIEICODE      Interception event code
    0028   40 Bitstring    4 $SIETODPR      TOD programmable register
    002C   44 Bitstring    8 $SIEGMSLM      Guest real main storage limit
    0034   52 Bitstring   16 $SIEGPSW       Guest PSW (31-bit and 64-bit)
    0044   68 Bitstring   52 $SIEUZP0       Guest prefix page values
    0078  120 Bitstring  128 $SIEGCRS       Guest control registers 0-15
    00F8  248 Bitstring    8 $SIEBEAR       Breaking-event-address register
    0100  256 Bitstring    1 $SIEIBM5       CPNC
              00000101       $SIE_LEN       *-$SIEBK Total length, in bytes
              00000021       $SIE_SZ        ($SIE_LEN+7)/8 Size in
                                            doublewords

$SIEBK Storage Layout | Top of page

    *** $SIEBK - Relocation mapping for HCPSIEBK
    *
    *     +-------------+-------------+---------------------------+
    *   0 | $SIE_HDRL   | $SIE_BITL   |///////////////////////////|
    *     +------+------+-------------+------+--------------------+
    *   8 |$SIE0 |        $SIEPREFX          |      (00D)-        |
    *     +------+---------------------------+--------------------+
    *  10 |           -$SIECPUTM             |      (015)-        |
    *     +----------------------------------+--------------------+
    *  18 |            -$SIECKC              |      (01D)-        |
    *     +----------------------------------+-------------+------+
    *  20 |           -$SIEEPOCH             | $SIEICPUA   |(027) |
    *     +---------------------------+------+-------------+------+
    *  28 |        $SIETODPR          |        $SIEGMSLM-         |
    *     +---------------------------+---------------------------+
    *  30 |          -(02C)           |                           |
    *     +---------------------------+                           |
    *     |                       $SIEGPSW                        |
    *     |                           +---------------------------+
    *     |                           |                           |
    *     +---------------------------+                           |
    *  48 |                                                       |
    *     =                       $SIEUZP0                        =
    *     |                                                       |
    *     +-------------------------------------------------------+
    *  78 |                                                       |
    *     =                       $SIEGCRS                        =
    *     |                                                       |
    *     +-------------------------------------------------------+
    *  F8 |                       $SIEBEAR                        |
    *     +------+------------------------------------------------+
    * 100 |:EIBM5| 101
    *     +------+
    *
    *** $SIEBK - Relocation mapping for HCPSIEBK

$SIEBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    $SIE_BITL      0002
    $SIE_BITS      0008
    $SIE_BLEN      0008 00000001
    $SIE_DATA      0009
    $SIE_HDLN      0004 00000008
    $SIE_HDRL      0000
    $SIE_LEN       0100 00000101
    $SIE_SZ        0100 00000021
    $SIE_VER       0000 00000002
    $SIEBEAR       00F8
    $SIECKC        0015
    $SIECPUTM      000D
    $SIEECMVP      0008 20
    $SIEECVEC      0008 10
    $SIEEPOCH      001D
    $SIEESAME      0008 80
    $SIEGCRS       0078
    $SIEGMSLM      002C
    $SIEGPSW       0034
    $SIEIBM5       0100
    $SIEICODE      0027
    $SIEICPUA      0025
    $SIEPREFX      0009
    $SIETODPR      0028
    $SIEUZP0       0044
    $SIEXA         0008 40
    $SIE0          0008

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:32:12 EDT.
Copyright IBM Corporation, 1990, 2020