Register Contents

Table 1 gives the contents of the registers when VSAM exits to the IGW8PNRU routine.

Table 1. Contents of registers at entry to IGW8PNRU exit routine
Register	Contents
0	Not applicable.
1	Address of IGWUNLR (in key 8 storage).
	Address of an area to be used as an autodata area (in key 8 storage).
3	Length of the autodata area.
4-13	Unpredictable. Register 13, by convention, contains the address of your processing program's 72-byte save area, which must not be used as a save area by the IGW8PNRU routine if it returns control to VSAM.
14	Return address to VSAM.
15	Entry address to the IGW8PNRU routine.