PTRMB

Prolog  

Control Block Contents  
   PTRMB DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

PTRMB Prolog

 NAME       : HCPPTRMB
 DESCRIPTION: Page Table Resource Management block
 DSECT      : PTRMB
 FUNCTION   : Contains information used in managing
              (allocation and re-organization of) a PTRM
              address space.
 LOCATED BY : ASCTYPTR field of ASCBK points to a CAABK.  This
              control block starts at CAAFSI (function specific
              information) section of the CAABK.
 CREATED BY : HCPPRPIN, when creating a PTRM address space
 DELETED BY : Once created it is never deleted.
 SERIALIZED :
 Comments   :
              The PTRM reorganization fields were moved from this
              PTRM specific control block to the more general,
              CAABK.  This was because HCPASURO, HCPVAMAP and
              HCPVAMDP now manage other System Utility address
              spaces (like the ISFC address space, ASCUCONN in
              ASCSUTYP).

PTRMB Control Block Content

PTRMB DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      PTRMB          Page Table Resource Management
                                        block
0000    0 Bitstring    1 PTRINDEX       Index of the RSAASITB entry that
                                        describes address space.
                                        Serialized by RSAPRLK.
0001    1 Bitstring    1 * (3)          Reserved for IBM use
0004    4 Signed       4 * (3)          Reserved for IBM use
          00000002       PTRSIZE        (*-PTRMB+7)/8 Size, in
                                        doublewords, of PTRMB.

PTRMB Storage Layout

          
*** PTRMB - Page Table Resource Management block
*
*     +------+--------------------+---------------------------+
*   0 |:INDEX|////////////////////|///////////////////////////|
*     +------+--------------------+///////////////////////////|
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  10
*
*** PTRMB - Page Table Resource Management block

PTRMB Cross Reference

Symbol         Dspl Value
-------------- ---- -----
PTRINDEX       0000
PTRSIZE        0004 00000002