> Yes - in fact this appears to be a general problem with RL78 interrupt
> handlers. There are no instructions to push/pop the current bank
> selection, so in order for nested interrupt handlers to work they would
> have to do something like:
The bank select bits are in PSW, which is automati
Hi DJ,
* Uses register bank 3 instead of register bank 0 inside the
handler.
I wonder if nested interrupts will cause problems, since the second
interrupt will occur with RB3 already selected.
Yes - in fact this appears to be a general problem with RL78 interrupt
handlers. Ther
> * Uses register bank 3 instead of register bank 0 inside the
> handler.
I wonder if nested interrupts will cause problems, since the second
interrupt will occur with RB3 already selected.
Also, there are some hand-coded routines in libgloss/libgcc that
manually swap banks, they'd hav
Hi DJ,
The patch below makes some changes to the way the RL78 backend handles
the generation of interrupt functions. Specifically it:
* Uses register bank 3 instead of register bank 0 inside the
handler.
* Tweaks the need_to_save() function so only those registers that
w
