gtpi1m11System Installation Support Reference

DLAYC Macro Entry

User exit routine UCCDLAY is called during macro processing for an DLAYC or YIELDC macro (if the exit point named DLAY is active). The exit point is in CSECT CCNUCL.

General Conditions at Entry

The registers at entry are:

R6
Type of macro calling this exit point.

01
DLAYC macro call

02
YIELDC macro call (for the READY list)

02
YIELDC macro call (for the virtual file access count (VCT) list)

R9
Pointer to entry control block (ECB) page 1.

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

System Conditions at Entry

System state
Supervisor

System mask
Masked for I/O interrupts

Protect key
Working storage or zero (0)

Address Space
EVM.

Programming Considerations at Entry

See User Exit Routines - Common Programming Considerations for other considerations.

Programming Considerations on Return

General Conditions on Return