SYSEVENT macro - is type 1, gets SRM lock (dependent
on SYSEVENT code in register 0).
Calls module IRARMINT.
GTF data is:
- R15
- For some SYSEVENT codes, contains the return code value.
- R0
- Contents:
- Bytes
- Contents
- 0-1
- Zeros, address space identifier (ASID), or not applicable.
- 2
- Contents variable.
- 3
- SYSEVENT code.
- R1
- Contents variable.