BMGBK | Back to Index page

| Prolog Control Block Contents BMGBK 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.

BMGBK Prolog | Top of page

     NAME       : HCPBMGBK
     DESCRIPTION: Bit map control block (z/architecture mode)
     DSECT      : BMGBK
     FUNCTION   : HCPBMGBK is used to describe the local and
                  global bitmaps which are used by VMDUMP.  It
                  contains bitmap information and a mapping of
                  the meta-map which points to each page of the
                  local or global pointer pages, which point
                  to the local or global bitmaps.
     LOCATED BY : VDUGPAGM, VDULPAGM
     CREATED BY : HCPVMR - Range processing routines
     DELETED BY : HCPVDC - VMDUMP clean-up module
     REFERENCES : None
     RELOCATION CONSIDERATIONS : None
     COMMENTS   : None

BMGBK Control Block Content | Top of page

     BMGBK DSECT
    Top of page

    Hex   Dec Type/Val   Lng Label (dup)    Comments
    ---- ---- --------- ---- -------------- --------
    0000    0 Structure      BMGBK          Bit map control block (z/architecture mode)
    0000    0 Dbl-Word     8 BMGSTOR        Storage size mapped by BMGBK
    0008    8 Address      4 BMGMETA (4)    Host logical addresses of each
                                            pointer page.
    0018   24 Bitstring    1 BMG$END (0)    Defines end of control blk

BMGBK Storage Layout | Top of page

    *** BMGBK - Bit map control block (z/architecture mode)
    *
    *     +-------------------------------------------------------+
    *   0 |                       BMGSTOR                         |
    *     +-------------------------------------------------------+
    *   8 |                       BMGMETA                         |
    *     |                                                       |
    *     +-------------------------------------------------------+
    *
    *** BMGBK - Bit map control block (z/architecture mode)

BMGBK Cross Reference | Top of page

    Symbol         Dspl Value
    -------------- ---- -----
    BMG$END        0018
    BMGMETA        0008
    BMGSTOR        0000

This information is based on z/VM 7.2.0 Last updated on 24 Jun 2020 at 09:27:07 EDT.
Copyright IBM Corporation, 1990, 2020