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Programming Interface Information:
This information is NOT
intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only. |
VECBK
Cross Reference (Contains links to field and bit definitions)
VECBK Prolog
NAME : HCPVECBK
DESCRIPTION: Guest Vector Facility Control Block
DSECT : VECBK
FUNCTION : HCPVECBK is the primary control block for a virtual
CPU's Vector Facility. It contains or refers to
all guest Vector Facility registers, plus additional
vector activity counters.
LOCATED BY : VMDVECTR in the VMBDK of the owning virtual CPU.
CREATED BY : HCPVFVIN - Virtual Vector Facility initialization.
DELETED BY : HCPVFVDE - Virtual Vector Facility de-initialization.
SERIALIZED : Most fields in the VECBK are manipulated under
"guest vector state serialization": when the
guest vector facility is loaded into a real
processor, the serialization is processor-local on
that processor; otherwise, the serialization is
guest instruction stream (VMDSIMWT) or console
function mode.
VECBK Control Block Content
VECBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure VECBK Guest Vector Facility Control Block 0000 0 Address 4 VECVSATB Pointer to the Vector Register Save Area block 0004 4 Signed 4 * Reserved for future IBM use 0008 8 Dbl-Word 8 VECVSR (0) Guest Vector Status Register: 0008 8 Bitstring 1 * ..Reserved for future IBM use 0009 9 Bitstring 1 VECVSRMO ..Vector mode flags .... ...1 VECVSRMM X'01' ....Vector Mask Mode 000A 10 Signed 2 VECVSRCT ..Vector Count (of elements to ..participate in operations) 000C 12 Signed 2 VECVSRIX ..Vector Interruption Index (next ..element number) 000E 14 Signed 2 VECVSRIC (0) ..Vector In-Use and Change mask 000E 14 Bitstring 1 VECVSRIU ....Vector In-Use mask (one bit ....per VR pair) 000F 15 Bitstring 1 VECVSRCH ....Vector Change mask (one bit ....per VR pair) 0010 16 Signed 8 VECVAC Guest Vector Activity Count 0018 24 Signed 8 VECVACOL Guest Vector Activity Count at the time of last updating of accounting values 0020 32 Signed 8 VECDVAC Guest Vector Activity Count at the start of the timeslice 0028 40 Signed 2 VECVCP (0) Vector change preservation area 0028 40 Bitstring 1 VECVHC Vector host change preservation 0029 41 Bitstring 1 VECVGC Vector guest change preservation 002A 42 Signed 2 * Reserved for future IBM use 002C 44 Signed 4 * Reserved for future IBM use 00000006 VECSIZE (*-VECBK+7)/8 size of VECBK in doublewords excluding VECVMR 0030 48 Bitstring 1 VECVMR (0) Guest Vector Mask Register the size of VECVMR is (section size / 2) bytes
VECBK Storage Layout
*** VECBK - Guest Vector Facility Control Block * * +---------------------------+---------------------------+ * 0 | VECVSATB |///////////////////////////| * +------+------+-------------+-------------+------+------+ * 8 |//////|:VSRMO| VECVSRCT | VECVSRIX |:VSRIU|:VSRCH| * +------+------+-------------+-------------+------+------+ * 10 | VECVAC | * +-------------------------------------------------------+ * 18 | VECVACOL | * +-------------------------------------------------------+ * 20 | VECDVAC | * +------+------+-------------+---------------------------+ * 28 |VECVHC|VECVGC|/////////////|///////////////////////////| * +------+------+-------------+---------------------------+ * 30 | | * = VECVMR = * | | * +-------------------------------------------------------+ * *** VECBK - Guest Vector Facility Control Block
VECBK Cross Reference
(contains links to field and bit definitions)Symbol Dspl Value -------------- ---- -----VECDVAC 0020
VECSIZE 002C 00000006
VECVAC 0010
VECVACOL 0018
VECVCP 0028
VECVGC 0029
VECVHC 0028
VECVMR 0030
VECVSATB 0000
VECVSR 0008
VECVSRCH 000F
VECVSRCT 000A
VECVSRIC 000E
VECVSRIU 000E
VECVSRIX 000C
VECVSRMM 0009 01
VECVSRMO 0009
Last updated on 3 Aug 1999 at 13:44:34 EDT.
Copyright IBM Corporation, 1990, 1999