Saw this mentioned by dlevere on the gamehacking.org/vb forums. Somebody might find this useful for a PS4 debugger. There's also a discord channel and whatever else. I don't have a PS4 or anything so nothing I can do. Maybe somebody here might find it useful for breakpoints or something.
https://www.psxhax.com/threads/ps4reaper-ps4-rte-debugger-and-trainer-maker-by-shiningami.6077/