Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
$HCIBK
Control Block Contents
$HCIBK DSECT
Cross Reference (Contains links to field and bit definitions)
$HCIBK Prolog
NAME : LGRHCIBK DESCRIPTION: Relocation mapping for HCPHCIBK DSECT : $HCIBK FUNCTION : LGRHCIBK describes those fields of the HCIBK 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 HCPHCIBK 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.
$HCIBK Control Block Content
$HCIBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure $HCIBK Relocation mapping for HCPHCIBK 00000001 $HCI_VER 1 Mapping version number 0000 0 Signed 2 $HCI_HDRL Header length (in bytes) 0002 2 Signed 2 $HCI_BITL Length of mapped bits (in bytes) 0004 4 Signed 4 * Reserved for future use 00000008 $HCI_HDLN *-$HCIBK Length of header (bytes) Bit map: Contains the HCIBK flags that are subject to relocation. These bits are defined sequentially, regardless of how they are defined in HCPHCIBK. 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 $HCI_BITS (0) Bit map area 0008 8 Bitstring 1 $HCI0 1... .... $HCISHOWN X'80' $HCISHOWN HCIVFLAG 00000001 $HCI_BLEN *-$HCI_BITS Length of bit map area Data: Contains all HCPHCIBK 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 $HCI_DATA (0) Start of data map 0009 9 Bitstring 4 $HCIFPNT -> RDO offset to next $HCIBK 000D 13 Bitstring 2 $HCILEN Total HCIBK message buffer length 000F 15 Bitstring 1 $HCIGFLG0 General object message flags 0010 16 Bitstring 1 $HCIGFLG1 Reserved for future IBM use 0011 17 Bitstring 2 $HCIMLFLG Line type flags 0013 19 Bitstring 4 $HCIGFGPA Foreground presentation attributes 0017 23 Bitstring 4 $HCIMFGPA Presentation-attribute field 001B 27 Bitstring 4 $HCISEQ General object sequence number 001F 31 Bitstring 2 $HCILINE Binary line no. for Q VMSG/PVMSG 0021 33 Bitstring 4 $HCITEXT -> RDO offset to message text 00000025 $HCI_LEN *-$HCIBK Total length, in bytes 00000005 $HCI_SZ ($HCI_LEN+7)/8 Size in doublewords
$HCIBK Storage Layout
*** $HCIBK - Relocation mapping for HCPHCIBK * * +-------------+-------------+---------------------------+ * 0 | $HCI_HDRL | $HCI_BITL |///////////////////////////| * +------+------+-------------+------+-------------+------+ * 8 |$HCI0 | $HCIFPNT | $HCILEN |(00F) | * +------+-------------+-------------+-------------+------+ * 10 |(010) | $HCIMLFLG | $HCIGFGPA |(017)-| * +------+-------------+---------------------------+------+ * 18 | -$HCIMFGPA | $HCISEQ |(01F)-| * +------+-------------+-------------+-------------+------+ * 20 |-(01F)| $HCITEXT | 25 * +------+---------------------------+ * *** $HCIBK - Relocation mapping for HCPHCIBK
$HCIBK Cross Reference
Symbol Dspl Value -------------- ---- ----- $HCI_BITL 0002 $HCI_BITS 0008 $HCI_BLEN 0008 00000001 $HCI_DATA 0009 $HCI_HDLN 0004 00000008 $HCI_HDRL 0000 $HCI_LEN 0021 00000025 $HCI_SZ 0021 00000005 $HCI_VER 0000 00000001 $HCIFPNT 0009 $HCIGFGPA 0013 $HCIGFLG0 000F $HCIGFLG1 0010 $HCILEN 000D $HCILINE 001F $HCIMFGPA 0017 $HCIMLFLG 0011 $HCISEQ 001B $HCISHOWN 0008 80 $HCITEXT 0021 $HCI0 0008
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