[Bug target/113312] Update __attribute__((interrupt)) for Intel FRED

[hjl.tools at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113312

--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to H.J. Lu from comment #7)
> (In reply to H. Peter Anvin from comment #6)
> > Of course. That's not what we want in the Linux kernel specifically, though.
> > It's really up to the OS.
> 
> no_callee_saved_registers attribute is sufficient.  One can do
>

void *
__attribute__((no_callee_saved_registers))
fred_handler (struct fred_event_info_and_caller_saved_regs *arg)
{
  ...
}