On Sat, 25 Jan 2025, Ivan Kokshaysky wrote: > > > Here just bumping up the frame size and adjusting offsets in assembly > > > code accordingly so as to account for the empty longword at the bottom > > > of the frame should do, just as I did across my change. > > > > ... or, depending on how you look at it, top of the frame and FAOD in any > > case the longword closest to the stack pointer will be the empty one. > > Right. So if we agree on my variant, this addition patch is needed. Erm, that's a good starting point but offsets for the individual register slots need to be updated as well for `do_page_fault' and `do_entUnaUser' to get at the correct ones for those that are at negative indices from the `regs' pointer supplied, i.e. $9 at 8($sp), $10 at 16($sp), etc., and with 0($sp) now unoccupied. Sorry to get it through unclear after all. Maciej
