Input Register Information

On entry to the event exit routine, the general purpose registers (GPRs) contain:

Register: Contents
0: Does not contain any information for use by the event exit
1: Address of the event exit parameter list (mapped by IXCYEVE)
2-12: Do not contain any information for use by the event exit
13: Address of a 144-byte work area for use by the event exit routine. The exit routine does not have to save and restore XCF's registers in this work area. The exit routine can use this work area in any way it chooses.
14: Return address
15: Entry point address

When the event exit receives control, the access registers (ARs) contain no information for use by the event exit.