When control returns to the caller, the general purpose registers (GPRs) contain:

Register

Contents

0

Reason code, if applicable, and if GPR15 return code is nonzero

1

Used as a work register by the system

2-13

Unchanged

14

Used as a work register by the system

15

Return code

When control returns to the caller, the access registers (ARs) contain:

Register

Contents

0-1

Used as work registers by the system

2-13

Unchanged

14-15

Used as work registers by the system