Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of z/VM.

UZPAG

Prolog  

Control Block Contents  
   UZPAG DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  


UZPAG Prolog

 NAME       : HCPUZPAG
 DESCRIPTION: PREFIX STORAGE AREA - MACHINE USAGE
 DSECT      : UZPAG
 FUNCTION   : THIS  CONTROL  BLOCK  DESCRIBES  THE  ARCHITECTED
              FIELDS IN PAGE ZERO (EITHER REAL ZERO OR ABSOLUTE
              ZERO DEPENDING ON USAGE).   THIS IS USED TO REFER
              TO GUEST PAGE ZERO.    FOR  HOST  PAGE  ZERO, THE
              PFXBK COPY FILE IS USED INSTEAD OF UZPAG.
 LOCATED BY : VMDPAGZP (WHILE NOT IN CONSOLE FUNCTION MODE)
              - HOST REAL ADDRESS OF THE GUEST PAGE ZERO
 CREATED BY : NOT APPLICABLE (CREATE AS A FUNCTION OF THE GUEST
              OPERATING SYSTEM
 DELETED BY : NOT APPLICABLE
              Notes      :  This copy file can be used to map the architected
              fields of the guest Prefix Storage Area for ESAME
              and page zero for System/370 and ESA/390 guests.
              For ESAME guests the PSA is 8K, that is, two
              contiguous pages in guest storage (but not
              necessarily contiguous in host storage).
              UZPAG -
              Maps page zero for 370 guests.
              Maps page zero for ESA guests.
              Maps page zero (1st page) of the 2 page ESAME
              Prefix Storage Area
              UOPAG -
              Maps page one (2nd page) of the 2 page ESAME
              Prefix Storage Area

 

UZPAG Control Block Content


UZPAG DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      UZPAG          PREFIX STORAGE AREA - MACHINE
                                        USAGE
0000    0 Dbl-Word     8 UZPIPSW (0)    IPL START PSW
0000    0 Signed       4 UZPIPSW0 (0)
0000    0 Bitstring    1 UZPIP1B0
0001    1 Bitstring    1 UZPIP1B1       EXTENDED MODE
0002    2 Signed       2 UZPIP1H1       IPL DEVICE ADDRESS
0004    4 Signed       4 UZPIPSW1       (ALSO RESTART NEW PSW)
0008    8 Dbl-Word     8 UZPICCW1       IPL CCW, FIRST (ALSO RESTART OLD
                                        PSW)
0010   16 Dbl-Word     8 UZPICCW2       IPL CCW, SECOND
0018   24 Dbl-Word     8 UZPEXTOP       EXTERNAL OLD PSW
0020   32 Dbl-Word     8 UZPSVCOP       SVC OLD PSW
0028   40 Dbl-Word     8 UZPPRGOP       PROGRAM OLD PSW
0030   48 Dbl-Word     8 UZPMCHOP       MACHINE-CHECK OLD PSW
0038   56 Dbl-Word     8 UZPIOOP        INPUT/OUTPUT OLD PSW
0040   64 Dbl-Word     8 UZPCSW (0)     CHANNEL STATUS WORD
0040   64 Signed       4 UZPCSWF0       KEY AND ADDRESS OF FULL CSW
0044   68 Signed       4 UZPCSWF1 (0)   2ND FULLWORD OF CSW
0044   68 Signed       2 UZPCSWH (0)    HALFWORD CSW
0044   68 Bitstring    1 UZPCSWB4       5TH BYTE OF CSW
0045   69 Bitstring    1 UZPCSWB5       6TH BYTE OF CSW
0046   70 Bitstring    1 UZPCSWB6       COUNT FIELD OF FULL CSW
0047   71 Bitstring    1 UZPCSWB7       COUNT FIELD OF FULL CSW
0048   72 Signed       4 UZPCAW         CHANNEL ADDRESS WORD
004C   76 Signed       4 *              NOT REFERENCED
0050   80 Signed       4 UZPTIMER       INTERVAL TIMER
0054   84 Signed       4 UZPETTHD       EXT. FACIL. TRACE TABLE HDR
0058   88 Dbl-Word     8 UZPEXTNP       EXTERNAL NEW PSW
0060   96 Dbl-Word     8 UZPSVCNP       SVC NEW PSW
0068  104 Dbl-Word     8 UZPPRGNP       PROGRAM NEW PSW
0070  112 Dbl-Word     8 UZPMCHNP       MACHINE-CHECK NEW PSW
0078  120 Dbl-Word     8 UZPIONP        INPUT/OUTPUT NEW PSW
0080  128 Signed       4 UZPEXMSF       MSF DATA BLOCK ADDR-CLASS 21 EXT
0084  132 Signed       4 UZPEXTCD (0)   EXTERNAL INTERRUPT CODE,FULLWORD
0084  132 Signed       2 UZPEXTCA       EXTERNAL IRPT. CPU ADDRESS
0086  134 Signed       2 UZPEXINT       EXTERNAL INTERRUPT CODE,HALFWORD
0088  136 Signed       2 UZPSVCIL       SVC INSTRUCTION LENGTH CODE
008A  138 Signed       2 UZPSVCNT       SVC INTERRUPT CODE
008C  140 Signed       4 UZPPRGCD (0)   PROGRAM ILC AND INTERRUPT CODE
008C  140 Signed       2 UZPPRGIL       PROGRAM INSTRUCTION LENGTH CODE
008E  142 Signed       2 UZPRGINT       PROGRAM INTERRUPT CODE
0090  144 Signed       4 UZPTRXAD (0)   TRANSLATION EXCEPTION ADDRESS
0090  144 Bitstring    1 UZPSSCTL       Space-switch event control
          1... ....      UZPSSON        X'80' Space-switch control bit
0091  145 Bitstring    1 UZPSSCT2       When a space switch program
                                        interrupt occurs, the space-
                                        switch event control bit is saved
                                        in the high order bit of
                                        UZPSSCTL. The remaining bits of
                                        UZPSSCTL and UZPSSCT2 are set to
                                        0.
0092  146 Signed       2 UZPOPASN       Old PASN - set for space-switch
                                        event program interrupt.
0090  144 Signed       4 UZPFPARM (0)   Data exception information
0090  144 Bitstring    3 *
0093  147 Bitstring    1 UZPDXCOD       Data exception code
0094  148 Signed       2 UZPMNCLS       MONITOR CLASS
0096  150 Signed       2 UZPPERCD       PROGRAM EVENT RECORDER(PER) CODE
0098  152 Dbl-Word     8 UZPGPERA (0)   PER Address for ESAME PSA
0098  152 Signed       4 UZPPERAD       PER ADDRESS
009C  156 Signed       4 UZPMONID       MONITOR CODE
00A0  160 Bitstring    1 UZPXCPAR       EXCEPTION ACCESS IDENTIFICATION
          .... 1111      PRGXCREG       X'0F' Access-register number
00A1  161 Bitstring    1 UZPPERAR       PER ACCESS IDENTIFICATION
00A2  162 Bitstring    1 UZPOPRID       Operand access identification
00A3  163 Bitstring    1 UZPARCHM       Processor architecture mode
          .... ...1      UZPAINME       X'01' Bit 7: 0 = ESA/390, 1 =
                                        ESAME Architecture mode is in the
                                        SARCH condition code
00A4  164 Signed       4 UZPMAPL        Control block for Ext. Facility
00A8  168 Signed       4 UZPFALET (0)   Used to contain the ALET that
                                        caused a translation exception.
00A8  168 Dbl-Word     8 UZPGTRAD (0)   ESAME: Translation-exception ID
00A8  168 Signed       4 UZPGTRAH       Trans-execpt ID high half
00AC  172 Signed       4 UZPGTRAL       Trans-execpt ID low half
00B0  176 Dbl-Word     8 UZPGMNCD (0)   ESAME: monitor code
00B0  176 Signed       4 UZPECSWL       LIMITED CHANNEL LOGOUT (ECSW)
00B4  180 Signed       4 *              ESAME: low ord word monitor code
00B8  184 Signed       4 UZPIOSID (0)   370/XA I/O INTERRUPT SUBSYS ID
00B8  184 Bitstring    1 *              370: UNUSED, 370/XA: ZERO
00B9  185 Bitstring    1 UZPIOQCT       370: QUEUED I/O COUNT, 370/XA:01
00BA  186 Signed       2 UZPIODEV       370: DEVICE ADDRESS, 370/XA:
                                        SUBCHANNEL NUMBER
00BC  188 Signed       4 UZPINTPM       370/XA I/O INTERRUPTION PARM
00C0  192 Signed       4 UZPHIIDW       Host Interruption Identification
                                        Word
00C4  196 Signed       4 *              Reserved for IBM use
00C8  200 Signed       4 UZPSTFL (0)    STFL Facility List
00C8  200 Bitstring    1 UZPSTFL0       Byte 0, bits 0-7 of STFL List
          1... ....      STFL0N3A       X'80' "N3" instructions available
          .1.. ....      STFL0MEA       X'40' ESAME available
          ..1. ....      STFL0MEE       X'20' ESAME enabled
00C9  201 Bitstring    3 *              Bytes 1-3 of the STFL List
00CC  204 Signed       4 *              Reserved for IBM use
00D0  208 Signed       4 *              Reserved for IBM use
00D4  212 Signed       4 UZPFPXSA       Extended-save-area address
00D8  216 Dbl-Word     8 UZPMCPUT       CPU TIMER LOGOUT
00E0  224 Dbl-Word     8 UZPCKCMP       TOD COMPARATOR LOGOUT ON MACHINE
00E8  232 Dbl-Word     8 UZPMCIC        MACHINE-CHECK INTERRUPT CODE
          111. 1...      UZPMCI01       UZPMCIC,2 OVLY FOR FIRST TWO
                                        BYTES OF MCIC
00F0  240 Signed       4 UZPMCHCW       MACHINE CHECK CHAN. REPORT WORD
00F4  244 Signed       4 UZPEDMGC       EXTERNAL DAMAGE CODE
00F8  248 Dbl-Word     8 UZPGMCFS (0)   ESAME: machine chk failing addr
00F8  248 Signed       4 UZPMCHFS       MACHINE CHECK FAILING STOR. ADDR
00FC  252 Signed       4 UZPMCHRC       MACHINE CHECK REGION CODE
0100  256 Bitstring   96 UZPFCLOG (0)   GUEST FULL CHANNEL LOGOUT
0100  256 Bitstring   96 UZPFXLOG (0)   MACHINE CHECK FIXED LOGOUT AREA
0100  256 Dbl-Word     8 UZPMCHFA (0)   MACHINE-CHECK FAILING-STORAGE
                                        ASIT
0100  256 Dbl-Word     8 UZPSTPSW       STORE STATUS PSW LOGOUT AREA
0108  264 Signed       4 UZPSTPFX       STORE STATUS PREFIX LOGOOUT AREA
010C  268 Signed       4 UZPSTMDL       STORE STATUS MODEL DEPENDENT
0110  272 Dbl-Word     8 UZPFXLGM (2)   REMAINDER OF FIXED LOGOUT AREA
0120  288 Signed       4 UZPARLOG (16)  ACCESS REGISTER LOGOUT AREA
0160  352 Dbl-Word     8 UZPFPRLG (4)   FLOATING POINT REG. LOGOUT AREA
0180  384 Signed       4 UZPGPRLG (16)  GENERAL REGISTER LOGOUT AREA
01C0  448 Signed       4 UZPCRLOG (16)  CONTROL REGISTER LOGOUT AREA
          00000200       UZPLAP         *-UZPAG LIMIT OF LOW ADDRESS
                                        PROTECTION
     ESAME Old and New PSW locations. Note that they are below the 512 byte
     line and therefore protected by LAP (UZPLAP).
0120  288 Bitstring   16 UZPGRSOP       ESAME Restart Old PSW
0130  304 Bitstring   16 UZPGEXOP       ESAME External Old PSW
0140  320 Bitstring   16 UZPGSVOP       ESAME SVC Old PSW
0150  336 Bitstring   16 UZPGPROP       ESAME Program Old PSW
0160  352 Bitstring   16 UZPGMCOP       ESAME Machine Check Old PSW
0170  368 Bitstring   16 UZPGIOOP       ESAME I/O Old PSW
0180  384 Bitstring   32 *              Reserved for Hardware use
01A0  416 Bitstring   16 UZPGRSNP       ESAME Restart New PSW
01B0  432 Bitstring   16 UZPGEXNP       ESAME External New PSW
01C0  448 Bitstring   16 UZPGSVNP       ESAME SVC New PSW
01D0  464 Bitstring   16 UZPGPRNP       ESAME Program New PSW
01E0  480 Bitstring   16 UZPGMCNP       ESAME Machine Check New PSW
01F0  496 Bitstring   16 UZPGIONP       ESAME I/O New PSW
     The following fields are S/370 fields which were in the same place that
     the translation exception ID field is in an ESAME mode guest.
00A8  168 Signed       4 UZPCHIDC       CHANNEL IDENTIFIER FROM 'STIDC'
00AC  172 Signed       4 UZPIOELA       I/O EXTENDED LOGOUT AREA POINTER
     FIELDS ABOVE ADDRESS 512 ARE NOT SPECIFIED BY PROCESSOR ARCHITECTURE.

 

UZPAG Storage Layout

          
*** UZPAG - PREFIX STORAGE AREA - MACHINE USAGE
*
*     +------+------+-------------+---------------------------+
*   0 |:IP1B0|:IP1B1|  UZPIP1H1   |         UZPIPSW1          |
*     +------+------+-------------+---------------------------+
*   8 |                       UZPICCW1                        |
*     +-------------------------------------------------------+
*  10 |                       UZPICCW2                        |
*     +-------------------------------------------------------+
*  18 |                       UZPEXTOP                        |
*     +-------------------------------------------------------+
*  20 |                       UZPSVCOP                        |
*     +-------------------------------------------------------+
*  28 |                       UZPPRGOP                        |
*     +-------------------------------------------------------+
*  30 |                       UZPMCHOP                        |
*     +-------------------------------------------------------+
*  38 |                       UZPIOOP                         |
*     +---------------------------+------+------+------+------+
*  40 |         UZPCSWF0          |:CSWB4|:CSWB5|:CSWB6|:CSWB7|
*     +---------------------------+------+------+------+------+
*  48 |          UZPCAW           |///////////////////////////|
*     +---------------------------+---------------------------+
*  50 |         UZPTIMER          |         UZPETTHD          |
*     +---------------------------+---------------------------+
*  58 |                       UZPEXTNP                        |
*     +-------------------------------------------------------+
*  60 |                       UZPSVCNP                        |
*     +-------------------------------------------------------+
*  68 |                       UZPPRGNP                        |
*     +-------------------------------------------------------+
*  70 |                       UZPMCHNP                        |
*     +-------------------------------------------------------+
*  78 |                       UZPIONP                         |
*     +---------------------------+-------------+-------------+
*  80 |         UZPEXMSF          |  UZPEXTCA   |  UZPEXINT   |
*     +-------------+-------------+-------------+-------------+
*  88 |  UZPSVCIL   |  UZPSVCNT   |  UZPPRGIL   |  UZPRGINT   |
*     +------+------+-------------+-------------+-------------+
*  90 |:SSCTL|:SSCT2|  UZPOPASN   | 94
*     +------+------+-------------+
*
*** UZPAG - PREFIX STORAGE AREA - MACHINE USAGE
          
*** Overlay for UZPTRXAD in UZPAG
*
*     +--------------------+------+-------------+-------------+
*  90 |////////////////////|:DXCOD|  UZPMNCLS   |  UZPPERCD   |
*     +--------------------+------+-------------+-------------+
*  98 |         UZPPERAD          |         UZPMONID          |
*     +------+------+------+------+---------------------------+
*  A0 |:XCPAR|:PERAR|:OPRID|:ARCHM|         UZPMAPL           |
*     +------+------+------+------+---------------------------+
*  A8 |         UZPGTRAH          |         UZPGTRAL          |
*     +---------------------------+---------------------------+
*  B0 |         UZPECSWL          |///////////////////////////|
*     +------+------+-------------+---------------------------+
*  B8 |//////|:IOQCT|  UZPIODEV   |         UZPINTPM          |
*     +------+------+-------------+---------------------------+
*  C0 |         UZPHIIDW          |///////////////////////////|
*     +------+--------------------+---------------------------+
*  C8 |:STFL0|////////////////////|///////////////////////////|
*     +------+--------------------+---------------------------+
*  D0 |///////////////////////////|         UZPFPXSA          |
*     +---------------------------+---------------------------+
*  D8 |                       UZPMCPUT                        |
*     +-------------------------------------------------------+
*  E0 |                       UZPCKCMP                        |
*     +-------------------------------------------------------+
*  E8 |                       UZPMCIC                         |
*     +---------------------------+---------------------------+
*  F0 |         UZPMCHCW          |         UZPEDMGC          |
*     +---------------------------+---------------------------+
*  F8 |         UZPMCHFS          |         UZPMCHRC          |
*     +---------------------------+---------------------------+
* 100 |                       UZPSTPSW                        |
*     +---------------------------+---------------------------+
* 108 |         UZPSTPFX          |         UZPSTMDL          |
*     +---------------------------+---------------------------+
* 110 |                       UZPFXLGM                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 120 |                                                       |
*     =                       UZPARLOG                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 160 |                                                       |
*     =                       UZPFPRLG                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 180 |                                                       |
*     =                       UZPGPRLG                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 1C0 |                                                       |
*     =                       UZPCRLOG                        =
*     |                                                       |
*     +-------------------------------------------------------+
* 200
*
*** Overlay for UZPTRXAD in UZPAG
          
*** Overlay for UZPARLOG in UZPAG
*
*     +-------------------------------------------------------+
* 120 |                       UZPGRSOP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 130 |                       UZPGEXOP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 140 |                       UZPGSVOP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 150 |                       UZPGPROP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 160 |                       UZPGMCOP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 170 |                       UZPGIOOP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 180 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
* 1A0 |                       UZPGRSNP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 1B0 |                       UZPGEXNP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 1C0 |                       UZPGSVNP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 1D0 |                       UZPGPRNP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 1E0 |                       UZPGMCNP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 1F0 |                       UZPGIONP                        |
*     |                                                       |
*     +-------------------------------------------------------+
* 200
*
*** Overlay for UZPARLOG in UZPAG
          
*** Overlay for UZPGTRAD in UZPAG
*
*     +---------------------------+---------------------------+
*  A8 |         UZPCHIDC          |         UZPIOELA          |
*     +---------------------------+---------------------------+
*  B0
*
*** Overlay for UZPGTRAD in UZPAG

 

UZPAG Cross Reference

Symbol         Dspl Value
-------------- ---- -----
PRGXCREG       00A0 0F
STFL0MEA       00C8 40
STFL0MEE       00C8 20
STFL0N3A       00C8 80
UZPAINME       00A3 01
UZPARCHM       00A3
UZPARLOG       0120
UZPCAW         0048
UZPCHIDC       00A8
UZPCKCMP       00E0
UZPCRLOG       01C0
UZPCSW         0040
UZPCSWB4       0044
UZPCSWB5       0045
UZPCSWB6       0046
UZPCSWB7       0047
UZPCSWF0       0040
UZPCSWF1       0044
UZPCSWH        0044
UZPDXCOD       0093
UZPECSWL       00B0
UZPEDMGC       00F4
UZPETTHD       0054
UZPEXINT       0086
UZPEXMSF       0080
UZPEXTCA       0084
UZPEXTCD       0084
UZPEXTNP       0058
UZPEXTOP       0018
UZPFALET       00A8
UZPFCLOG       0100
UZPFPARM       0090
UZPFPRLG       0160
UZPFPXSA       00D4
UZPFXLGM       0110
UZPFXLOG       0100
UZPGEXNP       01B0
UZPGEXOP       0130
UZPGIONP       01F0
UZPGIOOP       0170
UZPGMCFS       00F8
UZPGMCNP       01E0
UZPGMCOP       0160
UZPGMNCD       00B0
UZPGPERA       0098
UZPGPRLG       0180
UZPGPRNP       01D0
UZPGPROP       0150
UZPGRSNP       01A0
UZPGRSOP       0120
UZPGSVNP       01C0
UZPGSVOP       0140
UZPGTRAD       00A8
UZPGTRAH       00A8
UZPGTRAL       00AC
UZPHIIDW       00C0
UZPICCW1       0008
UZPICCW2       0010
UZPINTPM       00BC
UZPIODEV       00BA
UZPIOELA       00AC
UZPIONP        0078
UZPIOOP        0038
UZPIOQCT       00B9
UZPIOSID       00B8
UZPIPSW        0000
UZPIPSW0       0000
UZPIPSW1       0004
UZPIP1B0       0000
UZPIP1B1       0001
UZPIP1H1       0002
UZPLAP         01C0 00000200
UZPMAPL        00A4
UZPMCHCW       00F0
UZPMCHFA       0100
UZPMCHFS       00F8
UZPMCHNP       0070
UZPMCHOP       0030
UZPMCHRC       00FC
UZPMCIC        00E8
UZPMCI01       00E8 E8
UZPMCPUT       00D8
UZPMNCLS       0094
UZPMONID       009C
UZPOPASN       0092
UZPOPRID       00A2
UZPPERAD       0098
UZPPERAR       00A1
UZPPERCD       0096
UZPPRGCD       008C
UZPPRGIL       008C
UZPPRGNP       0068
UZPPRGOP       0028
UZPRGINT       008E
UZPSSCTL       0090
UZPSSCT2       0091
UZPSSON        0090 80
UZPSTFL        00C8
UZPSTFL0       00C8
UZPSTMDL       010C
UZPSTPFX       0108
UZPSTPSW       0100
UZPSVCIL       0088
UZPSVCNP       0060
UZPSVCNT       008A
UZPSVCOP       0020
UZPTIMER       0050
UZPTRXAD       0090
UZPXCPAR       00A0

This information is based on z/VM V4R1.0.
Last updated on 5 Jun 2001 at 17:08:29 EDT.
Copyright IBM Corporation, 1990, 2001