Data Areas

ADPLEXTN: (Mapped by the mapping macro BLSABDPL) IPCS sets field ADPLEFCD to ADPLEFSR (X'0004') upon entry to a post-formatting exit routine to permit a common entry point to serve as a post-formatting exit routine as well as one of the following types of exit routines:
- ANALYZE exit routine
- ASCB exit routine
- TCB exit routine
- Verb exit routine
The registers and other conditions on entry to each of these types of exit routines are the same. ADPLEXTN can be used to determine the purpose of a given call to a multi-function entry point.