|
Hex Dec Type/Val Lng Label (dup) Comments
---- ---- --------- ---- -------------- --------
0000 0 Structure $CCTBK Relocation mapping for HCPCCTBK
00000001 $CCT_VER 1 Mapping version number
0000 0 Signed 2 $CCT_HDRL Header length (in bytes)
0002 2 Signed 2 $CCT_BITL Length of mapped bits (in bytes)
0004 4 Signed 4 * Reserved for future use
00000008 $CCT_HDLN *-$CCTBK Length of header (bytes)
Bit map: Contains the CCTBK flags that are subject to
relocation. These bits are defined sequentially,
regardless of how they are defined in HCPCCTBK.
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 $CCT_BITS (0) Bit map area
0008 8 Bitstring 1 $CCT0
1... .... $CCTPNDSN X'80' $CCTPNDSN CCTFLAG2
.1.. .... $CCTPNDSP X'40' $CCTPNDSP CCTFLAG2
..1. .... $CCTPNDRN X'20' $CCTPNDRN CCTFLAG2
...1 .... $CCTPNDRP X'10' $CCTPNDRP CCTFLAG2
.... 1... $CCTPNDCT X'08' $CCTPNDCT CCTFLAG2
.... .1.. $CCTRTVBF X'04' $CCTRTVBF CCTSTAT
.... ..1. $CCTSYNC X'02' $CCTSYNC CCTSTAT
.... ...1 $CCTCPINT X'01' $CCTCPINT CCTSTAT
0009 9 Bitstring 1 $CCT1
1... .... $CCTSTKED X'80' $CCTSTKED CCTSTAT
00000002 $CCT_BLEN *-$CCT_BITS Length of bit map
area
Data: Contains all HCPCCTBK 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.
000A 10 Bitstring 1 $CCT_DATA (0) Start of data map
000A 10 Bitstring 2 $CCTMXPID CURRENT MAX PATH ID FOR THIS CCT
000C 12 Bitstring 4 $CCTIUCV POINTER TO THE USER'S IUCVBK
0010 16 Bitstring 4 $CCTSNDHD SEND QUEUE HEAD
0014 20 Bitstring 4 $CCTSNDTL SEND QUEUE TAIL
0018 24 Bitstring 4 $CCTSNDPR SEND PRIORITY QUEUE TAIL
001C 28 Bitstring 4 $CCTRCVHD RECEIVE QUEUE HEAD
0020 32 Bitstring 4 $CCTRCVTL RECEIVE QUEUE TAIL
0024 36 Bitstring 4 $CCTRPYHD REPLY QUEUE HEAD
0028 40 Bitstring 4 $CCTRPYTL REPLY QUEUE TAIL
002C 44 Bitstring 4 $CCTRPYPR REPLY PRIORITY QUEUE TAIL
0030 48 Bitstring 4 $CCTMSGCT TOTAL MSGS SENT ON ALL PATHS
0034 52 Bitstring 1 $CCTCPSYS CP SYSTEM SERVICE CODE
0035 53 Bitstring 4 $CCTDESCT SEND QUEUE MSGS TO BE DESCRIBED
0039 57 Bitstring 4 $CCTPDSEG -> RDO offset to first PDEBK
0000003D $CCT_LEN *-$CCTBK Total length, in bytes
00000008 $CCT_SZ ($CCT_LEN+7)/8 Size in
doublewords
| |