Registers at entry
The contents of the registers on entry to this exit are:
- Register
- Contents
- 0
- Not applicable
- 1
- Pointer to parameter list
- 2-12
- Not applicable
- 13
- Pointer to register save area
- 14
- Return address
- 15
- Entry point address of the exit routine
RACF® uses the first word of the save area pointed to by register 13. The exit routine must not modify this part of the save area.