FASBK | Back to Index page

| Prolog Control Block Contents FASBK DSECT Storage Layout Cross Reference (Contains links to field and bit definitions) |
Programming Interface Information: This information is NOT intended to be used as Programming Interfaces of z/VM.

FASBK Prolog | Top of page

     NAME       : HCPFASBK
     DESCRIPTION: VMDUMP File Address Space Information
     DSECT      : FASBK
     FUNCTION   : Contains information about the VMDUMP file
                  that is unique for each address space
                  in the dump
     LOCATED BY : VDUFASBK
                  FASNEXT
     CREATED BY : HCPVMBLK
     DELETED BY : HCPVCCLN
     REFERENCES : None
     RELOCATION CONSIDERATIONS : None
     COMMENTS   : obtained from free storage

FASBK Control Block Content | Top of page

     FASBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      FASBK          VMDUMP File Address Space Information
    0000    0 Character    8 FASIASIT       Address space identification
                                            token (iASIT)
    0008    8 Character    8 FASEASIT       eASIT
    0010   16 Character  100 FASDUMID       Dump identifier for this address
                                            space
    0074  116 Character    8 FASFORMT       Format of this address space
    007C  124 Bitstring    1 FASFLAGS       Parsing flags
              1... ....      FASFORM        X'80' FASFORM 'Format' was
                                            specified
              .1.. ....      FASDCSS        X'40' FASDCSS 'DCSS' was
                                            specified
              ..1. ....      FASDMPID       X'20' FASDMPID Dumpid was
                                            specified
              ...1 ....      FASDCSSF       X'10' FASDCSSF DCSS's found to
                                            dump
              .... 1...      FAS1451        X'08' FAS1451 This address space
                                            was already found to be
                                            inaccessible. Msg 1451I was
                                            already issued.
    007D  125 Bitstring    1 FASFLAG2       2nd General flag byte
              1... ....      FASNOMRG       X'80' FASNOMRG Don't merge the
                                            local and global bitmaps
    007E  126 Character    2 *              Reserved for IBM use
    0080  128 Address      4 FASNEXT        Address of next FASBK
    0084  132 Address      4 FASDCSSP       Address of DSLs for DCSS list
    0088  136 Address      4 FASDEFP        Pointer to DSLBKs that map
                                            defined (configured) storage.
    008C  140 Address      4 FASSTOR        Pointer to DSLBKs that map all of
                                            storage
    0090  144 Dbl-Word     8 FASDCSHG (0)   Byte address past highest defined
                                            (DCSS) storage address that is
                                            not higher than 512G
    0090  144 Signed       4 FASDCSHH       High word
    0094  148 Signed       4 FASDCSHI       Low word
    0098  152 Dbl-Word     8 FASB2GDG (0)   Byte address past highest defined
                                            (configured) storage address that
                                            is < or = the Maximum Dumpable
                                            Address based on guest's
                                            architecture mode.
    0098  152 Signed       4 FASB2GDH       High word
    009C  156 Signed       4 FASB2GDL       Low word
    00A0  160 Dbl-Word     8 FASB2GHG (0)   Byte address past highest address
                                            (configured or DCSS) that is <
                                            or = the Maximum Dumpable Address
                                            based on guest's architecture
                                            mode.
    00A0  160 Signed       4 FASB2GHH       High word
    00A4  164 Signed       4 FASB2GHL       Low word
    00A8  168 Dbl-Word     8 FASHI          True Highest byte in address
                                            space. It may be above the
                                            Maximum Dumpable Address based on
                                            guest's architecture mode.
    00B0  176 Address      4 FASGPAGM       Pointer to global bit map
    00B4  180 Address      4 FASLPAGM       Pointer to local bit map
    00B8  184 Signed       4 FASASIBK       Record number of ASIBK for this
                                            address space in SDF
    00BC  188 Address      4 FASASIWK       Pointer to working copy of ASIBK
    00C0  192 Signed       2 FASCOUNT       Number of sets of dumped storage
                                            for this address space in dump
    00C2  194 Signed       2 *              Reserved for IBM use
    00C4  196 Signed       4 * (4)          Reserved for IBM use
    00D4  212 Bitstring    1 FAS$END (0)    Defines end of control blk

FASBK Storage Layout | Top of page

    *** FASBK - VMDUMP File Address Space Information
    *
    *     +-------------------------------------------------------+
    *   0 |                       FASIASIT                        |
    *     +-------------------------------------------------------+
    *   8 |                       FASEASIT                        |
    *     +-------------------------------------------------------+
    *  10 |                                                       |
    *     =                       FASDUMID                        =
    *     |                           +---------------------------+
    *     |                           |        FASFORMT-          |
    *     +---------------------------+------+------+-------------+
    *  78 |          -(074)           |:FLAGS|:FLAG2|/////////////|
    *     +---------------------------+------+------+-------------+
    *  80 |         FASNEXT           |         FASDCSSP          |
    *     +---------------------------+---------------------------+
    *  88 |         FASDEFP           |         FASSTOR           |
    *     +---------------------------+---------------------------+
    *  90 |         FASDCSHH          |         FASDCSHI          |
    *     +---------------------------+---------------------------+
    *  98 |         FASB2GDH          |         FASB2GDL          |
    *     +---------------------------+---------------------------+
    *  A0 |         FASB2GHH          |         FASB2GHL          |
    *     +---------------------------+---------------------------+
    *  A8 |                        FASHI                          |
    *     +---------------------------+---------------------------+
    *  B0 |         FASGPAGM          |         FASLPAGM          |
    *     +---------------------------+---------------------------+
    *  B8 |         FASASIBK          |         FASASIWK          |
    *     +-------------+-------------+---------------------------+
    *  C0 |  FASCOUNT   |/////////////|///////////////////////////|
    *     +-------------+-------------+///////////////////////////|
    *     |///////////////////////////////////////////////////////|
    *     |///////////////////////////+---------------------------+
    *     |///////////////////////////|
    *     +---------------------------+
    *
    *** FASBK - VMDUMP File Address Space Information

FASBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    FAS$END        00D4
    FASASIBK       00B8
    FASASIWK       00BC
    FASB2GDG       0098
    FASB2GDH       0098
    FASB2GDL       009C
    FASB2GHG       00A0
    FASB2GHH       00A0
    FASB2GHL       00A4
    FASCOUNT       00C0
    FASDCSHG       0090
    FASDCSHH       0090
    FASDCSHI       0094
    FASDCSS        007C 40
    FASDCSSF       007C 10
    FASDCSSP       0084
    FASDEFP        0088
    FASDMPID       007C 20
    FASDUMID       0010
    FASEASIT       0008
    FASFLAGS       007C
    FASFLAG2       007D
    FASFORM        007C 80
    FASFORMT       0074
    FASGPAGM       00B0
    FASHI          00A8
    FASIASIT       0000
    FASLPAGM       00B4
    FASNEXT        0080
    FASNOMRG       007D 80
    FASSTOR        008C
    FAS1451        007C 08

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:28:09 EDT.
Copyright IBM Corporation, 1990, 2020