When a HZSADDCHECK exit routine r returns control, the contents of the registers must be:

Register

Contents

Register 0 - 1

The exit routine does not have to place any information in this register, and does not have to restore its contents to what they were when the exit routine received control

Register 2 - 13

Unchanged

Register 14 - 15

The exit routine does not have to place any information in this register, and does not have to restore its contents to what they were when the exit routine received control.

When a HZSADDCHECK exit routine r returns control, the contents of the access registers (ARs) must be:

Register

Contents

Register 0 - 1

The exit routine does not have to place any information in this register, and does not have to restore its contents to what they were when the exit routine received control

Register 2 - 13

Unchanged

Register 14 - 15

The exit routine does not have to place any information in this register, and does not have to restore its contents to what they were when the exit routine received control