IBM: TCBADR

Programming Interface Information: This information is NOT intended to be
used as Programming Interfaces of VM/ESA. It is to be used for diagnosis only.

TCBADR

Prolog

Control Block Contents

TCBADR DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

TCBADR Prolog
 Name       : BGTCB
 Description: Task Control Block
 DSECT      : TCBADR
 Function   : TCBADR simulates the VSE task control block.
              TCBADR is called by the BGTCB macro.

TCBADR Control Block Content


TCBADR DSECT
Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      TCBADR         Task Control Block
0000    0 Signed       2 *              LENGTH OF TCB
0002    2 Bitstring    1 *              RESERVED
0003    3 Bitstring    1 TCBRID         RID
0004    4 Signed       2 FATHERID       TID OF ATTACHING TASK
0006    6 Bitstring    1 TCBFLAGS       FLAG BYTE
          1... ....      SYSRESW        X'80' 0 WRITE ON SYSRES ALLOWED
                                        1-2 RESERVED
          ...1 ....      ACLOSE         X'10' 3 VSAM AUTO. CLOSE IN
                                        PROCESS
          .... 1...      VSAMOPEN       X'08' 4 VSAM ACB'S OPEN IN
                                        PARTITIN
0007    7 Bitstring    1 TCBFLAG2       FLAG BYTE
0008    8 Signed       4 TCBTIB         TIB POINTER
000C   12 Signed       4 TCBSAVE        TASK SAVE AREA ADDRESS
0010   16 Signed       4 INTINFO        INTERRUPT INFORMATION
0014   20 Signed       4 AERREXIT (0)   ERROR EXITS
0014   20 Signed       4 TCBECB         USER TASKS: ADDR. OF ATTACH ECB
0018   24 Signed       4 TCBSAV2        ADDRESS OF SECOND SAVE AREA
001C   28 Signed       4 TCBITPTR       ADDRESS OF EXIT ROUTINE OR TECB
0020   32 Signed       4 TCBITSAV       ADDRESS OF EXIT SAVE AREA
          00000024       SSTCBLNG       *-TCBADR LENGTH OF SHORT SYSTEM
                                        TASK TCB
0024   36 Signed       4 TCBABPTR       ADDRESS OF AB EXIT ROUTINE
0028   40 Signed       4 TCBABSAV       ADDRESS OF AB EXIT SAVEAREA
002C   44 Signed       4 TCBPCPTR       ADDRESS OF PC EXIT ROUTINE
0030   48 Signed       4 TCBPCSAV       ADDRESS OF PC EXIT SAVEAREA

TCBADR Storage Layout

*** TCBADR - Task Control Block
*
*     +-------------+------+------+-------------+------+------+
*   0 |/////////////|//////|TCBRID|  FATHERID   |:FLAGS|:FLAG2|
*     +-------------+------+------+-------------+------+------+
*   8 |          TCBTIB           |         TCBSAVE           |
*     +---------------------------+---------------------------+
*  10 |         INTINFO           |          TCBECB           |
*     +---------------------------+---------------------------+
*  18 |         TCBSAV2           |         TCBITPTR          |
*     +---------------------------+---------------------------+
*  20 |         TCBITSAV          |         TCBABPTR          |
*     +---------------------------+---------------------------+
*  28 |         TCBABSAV          |         TCBPCPTR          |
*     +---------------------------+---------------------------+
*  30 |         TCBPCSAV          | 34
*     +---------------------------+
*
*** TCBADR - Task Control Block