Registers at Entry:

When the complete exit receives control, the GPRs contain the following information:

Register: Contents
0: Does not contain any information for use by the complete exit.
1: Address of a full word that contains the address of the CMPL.
2-12: Do not contain any information for use by the complete exit.
13: Address of a 72-byte work area for use by the complete exit routine. The exit routine does not have to save and restore 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 complete exit receives control, the ARs contain no information for use by the complete exit.