Running PCF applications on z/OS ICSF

If your installation uses PCF, you can run PCF applications on ICSF. You can use an installation option to specify whether a PCF application runs on ICSF. If you are migrating from PCF, ICSF provides a conversion program that converts a PCF CKDS to ICSF format.

You can use your own installation services and exits to customize ICSF. You can write, define, and call your own installation-defined callable service. You can also write and define exits that ICSF calls during the processing of:

ICSF mainline
A callable service
The PCF CKDS conversion program
The key generator utility program
CKDS access

For example, most callable services in ICSF call an exit before and after processing. Such an exit can alter return codes in a service.

ICSF System SVC 143

SVC 143 (0A8F) is an ICSF system SVC that is used by CUSP and PCF macros (GENKEY, RETKEY, CIPHER, and EMK) for SVC entry into ICSF. The SVC allows you to run a CUSP or PCF application on ICSF. See Running PCF and z/OS ICSF on the same system for more information about running CUSP and PCF applications on ICSF.

SVC 143 is a type 4 SVC and does not get a lock. The General Trace Facility data is:

R15 and R0: No applicable data.
R1: Address of the parameter list. The macro that is called determines the parameter list.