Administering OD z/OS

The following table identifies the data areas presented to exit routines. Mapping macros for these data areas are provided in the SARSINST data set. See the assembly listings of these data areas for details regarding the content and intended usage of the fields within each of these structures.

Table 1. ARSYSPIN exit routine data areas
Macro Name	DSECT Name	Description
ARSYUXPL	ARSYUXPL	Maps the principal interface parameter list pointed to by General Register 1 at entry to a given exit routine.
ARSYUXVD	ARSYUXVD	Maps the descriptor of an exit routine. Exit routine descriptors are contained within the ARSYUXVT structure.
ARSYUXVT	ARSYUXVT	Maps the User Exits Vector Table.
ARSYXOPA	ARSYXOPA	Maps the overall execution options structure.
ARSYXP	ARSYXP	Maps the interface data structures which are unique to each of the exit points.
ARSYXPCM	ARSYXPCM	Maps the interface data structure which is common to all exit points.

A mapping listing for reference can be produced by assembling the following source stream:

         TITLE 'ARSYUXPL: SPIN User Exit Interface Parameter List'
         ARSYUXPL DSECT=YES
*
         TITLE 'ARSYUXVD: SPIN User Exit Vector Descriptor'
         ARSYUXVD DSECT=YES
*
         TITLE 'ARSYUXVT: SPIN User Exit Vector Table'
         ARSYUXVT DSECT=YES
*
         TITLE 'ARSYXOPA: SPIN Execution Options'
         ARSYXOPA DSECT=YES
*
         TITLE 'ARSYXP: SPIN User Exit Data Structures'
         ARSYXP DSECT=YES
*
         TITLE 'ARSYXPCM: SPIN User Exit Common Information Structure'
         ARSYXPCM DSECT=YES
*
         END ,

The following figure illustrates how the data areas are interconnected.

This graphic shows the interconnection of data areas in ARSYSPIN exit routines. — Figure 1. Interconnection of data areas in ARSYSPIN exit routines

Data areas