gtpi1m25System Installation Support Reference

Suspend List Post-Interrupt

User exit routine UCCSUSP is called whenever an item is taken off the suspend list and is about to be dispatched. Exit point SUSP is located in copy segment CLHL of CSECT CCCLHR.

General Conditions at Entry

The registers at entry to UCCSUSP are:

R1
Address of the SWB that is taken off the suspend list.

R11-R15
See User Exit Routines - Common Entry Conditions.

System Conditions at Entry

System state
Supervisor

System mask
Masked for I/O and external interrupts

Protect key
0

Address Space
SVM.

Programming Considerations at Entry

Programming Considerations on Return

See User Exit Routines - Common Return Conditions.

General Conditions on Return

The application registers are restored and the ECB is given control.