Exit from the DIE routine

Must be to the address specified in register 14. This exit must also occur in supervisor state with PSW key zero, and disabled. The routine needs not save or restore any part of the general purpose or access registers that it uses.

On entry to the DIE, the contents of the Floating Point Registers (FPRs) and Floating Point Control (FPC) register are unpredictable. If the DIE uses the FPRs or FPC register, it must ensure that these registers are restored to the values they had on entry. See Floating point protocol for user exits.

On entry to the DIE, the contents of the Vector Registers (VRs) are unpredictable. The DIE is not allowed to use VRs.