USERSAVE

Prolog  

Control Block Contents  
   USERSAVE DSECT

Storage Layout  

Cross Reference (Contains links to field and bit definitions)  

USERSAVE Prolog

 Name       : USERSAVE
 Description: User Save Area
 DSECT      : USERSAVE
 Function   : Maps the area pointed to by R13 upon
              entry to a program called by SVC.

USERSAVE Control Block Content

USERSAVE DSECT

Hex   Dec Type/Val   Lng Label (dup)    Comments
---- ---- --------- ---- -------------- --------
0000    0 Structure      USERSAVE       User Save Area
0000    0 Dbl-Word     8 * (12)         Reserved for the user.
          00000060       USERSIZE       *-USERSAVE Size of area reserved
                                        for user.
0060   96 Dbl-Word     8 USERINFO       Information passed to user.
0060   96 Bitstring    1 USECTYP        Contains CALLTYP value.
0061   97 Bitstring    1 USEUFLG        Contains UFLAGS value.
0062   98 Bitstring    1 * (2)          Reserved for IBM use.
0064  100 Bitstring    1 USEMFLG        Miscellaneous bits.
          1... ....      USECMS         X'80' Invoked by CMSCALL.
          .1.. ....      USEA31         X'40' Caller's AMODE is 31.
          ..1. ....      USESCBLK       X'20' SCBLOCK is available in R2.
          ...1 ....      USEPLIST       X'10' Extended PLIST available in
                                        R0, only valid if invoked by
                                        CMSCALL.
          .... 1...      USEAR          X'08' Caller was in AR-mode when
                                        CMSCALL issued
0065  101 Bitstring    1 * (3)          Reserved for IBM use.
          0000000D       USERSAVL       (*-USERSAVE+7)/8 BLOCK LENGTH
                                        (DOUBLEWORD)

USERSAVE Storage Layout

          
*** USERSAVE - User Save Area
*
*     +-------------------------------------------------------+
*   0 |///////////////////////////////////////////////////////|
*     =///////////////////////////////////////////////////////=
*     |///////////////////////////////////////////////////////|
*     +-------------------------------------------------------+
*  60 |                       USERINFO                        |
*     +-------------------------------------------------------+
*  68
*
*** USERSAVE - User Save Area
          
*** Overlay for USERINFO in USERSAVE
*
*     +------+------+-------------+------+--------------------+
*  60 |:CTYP |:UFLG |/////////////|:MFLG |////////////////////|
*     +------+------+-------------+------+--------------------+
*  68
*
*** Overlay for USERINFO in USERSAVE

USERSAVE Cross Reference

Symbol         Dspl Value
-------------- ---- -----
USEAR          0064 08
USEA31         0064 40
USECMS         0064 80
USECTYP        0060
USEMFLG        0064
USEPLIST       0064 10
USERINFO       0060
USERSAVL       0065 0000000D
USERSIZE       0000 00000060
USESCBLK       0064 20
USEUFLG        0061