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Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
VOPBK
Control Block Contents
VOPBK DSECT
Cross Reference (Contains links to field and bit definitions)
VOPBK Prolog
NAME : HCPVOPBK
DESCRIPTION: HCPVOP simulation fetch/store work area
DSECT : VOPBK
FUNCTION : Work area used by HCPVOP simulation fetch/store
routines.
LOCATED BY : VMDVOPBK field of the VMDBK
CREATED BY : HCPBVMBK when a user logs on or when a new vCPU
is defined
DELETED BY : HCPUSPFF when a user logs off or when a vCPU is
detached
SERIALIZED : VMDBK dispatch lock (VMDBK local area)
RELOCATION CONSIDERATIONS : None
COMMENTS :
VOPBK Control Block Content
VOPBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure VOPBK HCPVOP simulation fetch/store work area 0000 0 Signed 4 VOPFLAG (0) 0000 0 Bitstring 1 VOPFLAG0 Flags for HCPVOP processing: 1... .... VOPBUFSP X'80' VOPBUFSP Caller has specified the .buffer to use. .1.. .... VOPRWERR X'40' VOPRWERR Indicate register wrap error ..1. .... VOPSTLOG X'20' VOPSTLOG Indicate request store into guest logical address. ...1 .... VOPFONLY X'10' VOPFONLY Indicate this address space is read only. .... 1... VOPNXTMV X'08' VOPNXTMV More than one section of data will be moved. .... .1.. VOPGOTBF X'04' VOPGOTBF HCPVOP got free storage for the output data buffer. The address of the buffer is in VOPBUFAD. .... ...1 VOPNRLLK X'01' VOPNRLLK Skip releasing IPTE lock 0001 1 Bitstring 1 VOPFLAG1 Additional HCPVOP flags: 1... .... VOPGAM64 X'80' VOPGAM64 HCPVOP may need to execute in 64-bit addressing mode to access zArch mode guest storage as host logical storage. .1.. .... VOPAMO64 X'40' VOPAMO64 HCPVOP is currently executing in 64-bit addressing mode to handle a V=V zArch mode guest guest. ..1. .... VOPEXTIN X'20' VOPEXTIN Executing inside FETCH/STORE exit ...1 .... VOPWAS64 X'10' VOPWAS64 Flag to indicate whether we were 1, or were not 0, in 64 bit addressing mode before changing states 0002 2 Bitstring 1 VOPPURGE Purge operation bits 0003 3 Bitstring 1 VOPAR AR number 0004 4 Signed 4 * Reserved for future IBM use 0008 8 Dbl-Word 8 VOPGWRAP Mask for address wrap (64-bit) 0010 16 Signed 4 VOPAGSIZ Page size - 1 (2047/4095) 0014 20 Address 4 VOPASUBR Subroutine for translation of guest logical (virtual, real, or absolute) to host logical 0018 24 Address 4 VOPBUFAD Pointer to CP operand buffer 001C 28 Address 4 VOPGRHL Subroutine for translation of guest real or absolute to host logical 0020 32 Signed 4 VOPIPLCK Address of IPTE lock (zero if relocation not active) 0024 36 Signed 4 VOPARMS (0) Input parameters 0024 36 Signed 2 VOPLEN Length of data to be fetched/ stored in bits 0-11. 0024 36 Bitstring 1 * Bits 0-7 of length. 0025 37 Bitstring 1 VOPINFL0 Bits 8-11 of length and 4 bits for flags. .... 1... VOPEXPRM X'08' Additional parameters are defined in the VNPBK. .... .1.. VOPALETS X'04' Guest-use ALET specified. .... ..1. VOPASITS X'02' I-ASIT specified. .... ...1 VOPMCRCD X'01' Return an MCRECORD. 0026 38 Bitstring 1 VOPINFLG Input flags (byte 2 of VOPARMS) 1... .... VOPLAP X'80' VOPLAP Apply low address protection 1... .... VOPLAPFO X'80' VOPLAPFO Apply low address protection .1.. .... VOPPROT X'40' VOPPROT Apply key protection ..1. .... VOPGA64R X'20' VOPGA64R Bits 18-19 of VOPARMS = b'10' For entry points which accept a guest operand address input in R1, input guest 64-bit address is provided in 64-bit wide input R1; for all entry points which deal with guest operands, HCPVOP internally represents the 64-bit guest operand address in 64-bit R1. ...1 .... VOPGA64S X'10' VOPGA64S Bits 18-19 of VOPARMS = b'01' For entry points which accept a guest operand address input in R1, input guest 64-bit address is provided in a 64-bit host real storage area pointed to by the 31-bit host real address in 32-bit input R1; for all entry points which deal with guest operands, HCPVOP internally represents the 64-bit guest operand address in a 64-bit host real storage area pointed to by the 31-bit host real address in 31-bit R1. Notes : If neither VOPGA64R or VOPGA64S are on, then HCPVOP internally represents the 31 bit guest operand address in 32 bit R1, and, for all entry points which accept a guest operand address in R1, the R1 input is a 31-bit guest operand address in 32-bit input R1. Notes : For entry points which accept a guest operand address input in R1, VOPGA64R and VOPGA64S are used to map both bits 18-19 of the input R0 parameter and also the copy of the input R0 parameter saved in the VOPARMS / VOPINFLG fields. All entry points which deal with guest operands but do NOT accept a guest opeand address input in R1 have bits 18-19 of the input R0 parameter undefined, and use the VOPERAND subroutine to determine the guest operand address. For these entry points, VOPGA64R and VOPGA64S are used both to MODIFY the local copy of the input R0 parameter (to indicate how VOPERAND has represented the guest operand address) and to map the copy of input R0 parameter (as modified by VOPERAND) saved in the VOPARMS / VOPINFLG fields. Needless to say, this is all much more confusing than it ought to be, but further cleanup is left for later, and should include an overhaul of HCPVINOP - HCPVOP interfaces. .... 1... VOPREGW X'08' VOPREGW Wrap register to R0 when RX=15 .... .11. VOPWRP64 X'06' VOPWRP64 64-bit wrap rule .... .1.. VOPWRPD X'04' VOPWRPD Diagnose wrap rule .... ..1. VOPWRP31 X'02' VOPWRP31 31-bit wrap rule .... ...1 VOPREALA X'01' VOPREALA Input is guest real address .... ...1 VOPGSTAR X'01' VOPGSTAR Input is guest AR number 0027 39 Bitstring 1 VOPCODE The forth byte of input parm. First 4 bit is align code next 4 bit is operand code or AR number or address space mode 0028 40 Dbl-Word 8 VOPASCE (0) Address-Space-Control Element (ASCE), zArch guest 0028 40 Signed 4 VOPASCEH High half of ASCE, zArch guest Reserved, 390 guest 002C 44 Signed 4 VOPASCEL (0) Low half of ASCE, zArch guest 002C 44 Bitstring 1 VOPASCB4 Byte 4 of ASCE, zArch guest 002D 45 Bitstring 1 VOPASCB5 Byte 5 of ASCE, zArch guest 002E 46 Bitstring 1 VOPASCB6 Byte 6 of ASCE, zArch guest 002F 47 Bitstring 1 VOPASCB7 Byte 7 of ASCE, zArch guest 0028 40 Signed 4 * Reserved, 390 guest 002C 44 Signed 4 VOPSTD (0) Segment-Table Designation (STD), 390 guest 002C 44 Bitstring 1 VOPSTDB0 Byte 0 of STD, 390 guest 002D 45 Bitstring 1 VOPSTDB1 Byte 1 of STD, 390 guest 002E 46 Bitstring 1 VOPSTDB2 Byte 2 of STD, 390 guest 002F 47 Bitstring 1 VOPSTDB3 Byte 3 of STD, 390 guest 0030 48 Dbl-Word 8 VOPGADDR (0) Input address (64-bit) 0030 48 Signed 4 VOPHADDR High half of large input address 0034 52 Signed 4 VOPADDR Low half (31-bit) input address Longer data moves can be handled in up to three sections. The host logical address for each section, as well as the length of each section, are saved in this small array with 3 entries. Each entry has a 64-bit host logical address field (VOPGHLAD), the right half of which is mapped as a 31-bit host logical address field (VOPHLADR), and a length field (VOPHLLEN). The same names are used for all three entries, the table is accessed using an index register containing a multiple of the entry length (VOPHLAEL). 0038 56 Dbl-Word 8 VOPHLAEN (0) A host logical address section entry 0038 56 Dbl-Word 8 VOPGHLAD (0) Host logical address of the first section (64-bit) 0038 56 Signed 4 * (high half of VOPGHVA1) 003C 60 Address 4 VOPHLADR Host logical address of the first section (31-bit) 0040 64 Signed 4 VOPHLLEN Length of the first section -1 0044 68 Signed 4 * reserved for IBM use 00000010 VOPHLAEL *-VOPHLAEN Length of one entry 0048 72 Bitstring 1 * (32) Space for two more entries 0068 104 Dbl-Word 8 VOPIASIT I-ASIT for the guest-absolute address space to be accessed. 0070 112 Signed 4 VOPEXADR Address of the extended parameter list, if one exists. 0074 116 Signed 4 VOPEXFLG (0) Flag field from the extended parameter list. 0074 116 Bitstring 1 VOPEXFB0 Byte 0 of VOPEXFLG 1... .... VOPBAUTO VNPBAUTO VOPBAUTO BUFADDR=AUTO was specified .1.. .... VOPLNFLD VNPLNFLD VOPLNFLD The LENFIELD operand was specified, and the length to fetch is found in the halfword whose displacement is in VOPLENFD. ..1. .... VOPMXLEN VNPMXLEN VOPMXLEN The MAXLEN operand was specified, and the maximum length to fetch is in VOPMAXLN. 0075 117 Bitstring 1 VOPEXFB1 Byte 1 of VOPEXFLG 0076 118 Bitstring 1 VOPEXFB2 Byte 2 of VOPEXFLG 0077 119 Bitstring 1 VOPEXFB3 Byte 3 of VOPEXFLG 0078 120 Signed 4 VOPLENFD Displacement of the field from which to fetch the parameter list length. 007C 124 Signed 4 VOPLUNIT Units in which the length to fetch is expressed. 0080 128 Address 2 VOPMAXLN Maximum length to fetch, in DWs. 0082 130 Signed 2 VOPLENTH Length fetched from LENFIELD 0084 132 Signed 4 * reserved for IBM use 0088 136 Dbl-Word 8 VOPPSW Guest PSW (bits 0-64) HCPVOP only uses VOPPSW to save the bits in the beginning of the guest's PSW. It has no need for the instruction address. So, VOPPSW is large enough to save the entire PSW for a 390 mode guest or the first half of an zArch mode guest. 00000090 VOPBKLEN *-VOPBK Define the length of the DSECT 00000012 VOPBKSIZ (VOPBKLEN+7)/8 Size of VOPBK in doublewords
VOPBK Storage Layout
*** VOPBK - HCPVOP simulation fetch/store work area
*
* +------+------+------+------+---------------------------+
* 0 |:FLAG0|:FLAG1|:PURGE|VOPAR |///////////////////////////|
* +------+------+------+------+---------------------------+
* 8 | VOPGWRAP |
* +---------------------------+---------------------------+
* 10 | VOPAGSIZ | VOPASUBR |
* +---------------------------+---------------------------+
* 18 | VOPBUFAD | VOPGRHL |
* +---------------------------+-------------+-------------+
* 20 | VOPIPLCK | VOPLEN |/////////////|
* +---------------------------+-------------+/////////////|
* |///////////////////////////////////////////////////////|
* +---------------------------+---------------------------+
* 30 | VOPHADDR | VOPADDR |
* +---------------------------+---------------------------+
* 38 |///////////////////////////| VOPHLADR |
* +---------------------------+---------------------------+
* 40 | VOPHLLEN |///////////////////////////|
* +---------------------------+---------------------------+
* 48 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +-------------------------------------------------------+
* 68 | VOPIASIT |
* +---------------------------+------+------+------+------+
* 70 | VOPEXADR |:EXFB0|:EXFB1|:EXFB2|:EXFB3|
* +---------------------------+------+------+------+------+
* 78 | VOPLENFD | VOPLUNIT |
* +-------------+-------------+---------------------------+
* 80 | VOPMAXLN | VOPLENTH |///////////////////////////|
* +-------------+-------------+---------------------------+
* 88 | VOPPSW |
* +-------------------------------------------------------+
* 90
*
*** VOPBK - HCPVOP simulation fetch/store work area
*** Overlay for VOPLEN in VOPBK
*
* +------+------+------+------+
* 20 ... 24 |//////|:INFL0|:INFLG|:CODE |
* +---------------------------+------+------+------+------+
* 28 | VOPASCEH |:ASCB4|:ASCB5|:ASCB6|:ASCB7|
* +---------------------------+------+------+------+------+
* 30
*
*** Overlay for VOPLEN in VOPBK
*** Overlay for VOPASCE in VOPBK
*
* +---------------------------+------+------+------+------+
* 28 |///////////////////////////|:STDB0|:STDB1|:STDB2|:STDB3|
* +---------------------------+------+------+------+------+
* 30
*
*** Overlay for VOPASCE in VOPBK
VOPBK Cross Reference
Symbol Dspl Value -------------- ---- ----- VOPADDR 0034 VOPAGSIZ 0010 VOPALETS 0025 04 VOPAMO64 0001 40 VOPAR 0003 VOPARMS 0024 VOPASCB4 002C VOPASCB5 002D VOPASCB6 002E VOPASCB7 002F VOPASCE 0028 VOPASCEH 0028 VOPASCEL 002C VOPASITS 0025 02 VOPASUBR 0014 VOPBAUTO 0074 80 VOPBKLEN 0088 00000090 VOPBKSIZ 0088 00000012 VOPBUFAD 0018 VOPBUFSP 0000 80 VOPCODE 0027 VOPEXADR 0070 VOPEXFB0 0074 VOPEXFB1 0075 VOPEXFB2 0076 VOPEXFB3 0077 VOPEXFLG 0074 VOPEXPRM 0025 08 VOPEXTIN 0001 20 VOPFLAG 0000 VOPFLAG0 0000 VOPFLAG1 0001 VOPFONLY 0000 10 VOPGADDR 0030 VOPGAM64 0001 80 VOPGA64R 0026 20 VOPGA64S 0026 10 VOPGHLAD 0038 VOPGOTBF 0000 04 VOPGRHL 001C VOPGSTAR 0026 01 VOPGWRAP 0008 VOPHADDR 0030 VOPHLADR 003C VOPHLAEL 0044 00000010 VOPHLAEN 0038 VOPHLLEN 0040 VOPIASIT 0068 VOPINFLG 0026 VOPINFL0 0025 VOPIPLCK 0020 VOPLAP 0026 80 VOPLAPFO 0026 80 VOPLEN 0024 VOPLENFD 0078 VOPLENTH 0082 VOPLNFLD 0074 40 VOPLUNIT 007C VOPMAXLN 0080 VOPMCRCD 0025 01 VOPMXLEN 0074 20 VOPNRLLK 0000 01 VOPNXTMV 0000 08 VOPPROT 0026 40 VOPPSW 0088 VOPPURGE 0002 VOPREALA 0026 01 VOPREGW 0026 08 VOPRWERR 0000 40 VOPSTD 002C VOPSTDB0 002C VOPSTDB1 002D VOPSTDB2 002E VOPSTDB3 002F VOPSTLOG 0000 20 VOPWAS64 0001 10 VOPWRPD 0026 04 VOPWRP31 0026 02 VOPWRP64 0026 06
Copyright IBM Corporation, 1990, 2011