System initialization routine of the login exit

The system initialization routine is called each time the server address space starts, and can acquire and initialize the GXB. Table 1 shows the codes and fields that are used for this routine:

Table 1. Codes and fields for system initialization
When Invoked	Field Name	Description	Contents
On entry	LEDSRQ	Request code	4
On exit	LEDSXD	Exit-supplied error message	Message Structure
On exit	LEDSRC	Return code	0 Initialization successful 4 Stop the NFS.
On exit	LEDSXG	Global Exit Block	Address