IBM: IMMBLOK

Programming Interface Information: This page documents intended Programming
Interfaces that allow the customer to write programs to obtain the services of VM/ESA.

IMMBLOK

Prolog

Control Block Contents

IMMBLOK DSECT

Storage Layout

Cross Reference (Contains links to field and bit definitions)

IMMBLOK Prolog
 Name       : IMMBLOK
 Description: Immediate Command Support
 DSECT      : IMMBLOK
 Function   : Mapping macro which maps information describing
              the characteristics of an immediate command.
              This block is created whenever an immediate
              command is established; it contains information
              about the immediate command. IMMBLOK is called
              by the IMMBLOK macro.

IMMBLOK Control Block Content


IMMBLOK DSECT
Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      IMMBLOK        Immediate Command Support
          00000000       IMMNEXTD       *-IMMBLOK IMMNEXT DISP INTO
                                        IMMBLOK
0000    0 Address      4 IMMNEXT        POINTER TO NEXT IMMBLOK
          00000004       IMMNEXTL       4 LENGTH OF IMMNEXT FIELD
0004    4 Signed       4 IMMUWORD       USER WORD
0008    8 Character    8 IMMNAME        IMMEDIATE COMMAND NAME
0010   16 Bitstring    1 IMMFLAG1       FLAGS
          1... ....      IMMSYS         X'80' IMMEDIATE COMMAND IS A
                                        NUCLEUS EXTENSION WITH SYSTEM
                                        ATTRIBUTE
          .1.. ....      IMMCOUNT       X'40' IMMEDIATE COMMAND
                                        ESTABLISHED VIA IMMCMD COMMAND
          ..1. ....      IMMNUCX        X'20' IMMEDIATE COMMAND IS A
                                        NUCLEUS EXTENSION
          ...1 ....      IMMAM31        X'10' AMODE OF EXIT IS AMODE 31
0011   17 Bitstring    1 IMMFLAG2 (3)   FLAGS
0014   20 Address      4 IMMADDR        ADDRESS OF EXIT ROUTINE
0018   24 Signed       4 IMMHIDE        NUMBER OF NUCLEUS EXTENSIONS THAT
                                        ARE HIDING THIS IMMEDIATE COMMAND
0020   32 Dbl-Word     8 IMMEND (0)
          00000004       IMMDWDS        (*-IMMBLOK)/8 SIZE IN DOUBLEWORDS
          00000020       IMMBYTES       (*-IMMBLOK) SIZE IN BYTES

IMMBLOK Storage Layout

*** IMMBLOK - Immediate Command Support
*
*     +---------------------------+---------------------------+
*   0 |         IMMNEXT           |         IMMUWORD          |
*     +---------------------------+---------------------------+
*   8 |                       IMMNAME                         |
*     +------+--------------------+---------------------------+
*  10 |:FLAG1|     IMMFLAG2       |         IMMADDR           |
*     +------+--------------------+---------------------------+
*  18 |         IMMHIDE           |///////////////////////////|
*     +---------------------------+---------------------------+
*  20 |                                                       |
*     =                        IMMEND                         =
*     |                                                       |
*     +-------------------------------------------------------+
*
*** IMMBLOK - Immediate Command Support