gtpi1m1dSystem Installation Support Reference

Fast Link Macro Decoder

User exit routine UCCFLM is invoked from the fast link macro decoder if the FLM exit point is active. Exit point FLM is in CSECT CCNUCL.

General Conditions at Entry

The registers at entry to UCCFLM are:

R6
Address of the macro entry in the macro decoder table.

R8
Base of E-type program that issued the fast link macro.

R9
Address of the ECB.

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

System Conditions at Entry

System state
Problem (see Programming Considerations at Entry, item 2)

System mask
Unmasked (see Programming Considerations at Entry, item 2)

Protect key
Working storage

Address Space
EVM.

Programming Considerations at Entry

  1. The contents of program registers R0-R7 have been saved in the ECB register save area.
  2. Usually, the system state and system mask are as stated. However, there can be exceptions if system programs issued MONTC to get to supervisor state and changed the system conditions.
  3. This exit includes ENTRC to FACE or FACS.
  4. The FLM exit point occurs before formatting an entry in the macro trace table.
  5. See User Exit Routines - Common Programming Considerations for other considerations.

Programming Considerations on Return

See User Exit Routines - Common Return Conditions.

General Conditions on Return

See User Exit Routines - Common Return Conditions.