Register Contents

Table 1 shows the register contents passed by VSAM when the UPAD exit routine is entered.

Table 1. Contents of registers at entry to UPAD exit routine
Register	Contents
0	Unpredictable.
1	Address of a parameter list built by VSAM.
2-12	Unpredictable.
13	Reserved.
14	Return address to VSAM.
15	Entry address of the UPAD routine.