[Bug other/67552] [meta] x86 interrupt attribute

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67552

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2015-09-14
     Ever confirmed|0                           |1

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> ---
(In reply to Yulia Koval from comment #5)
> Sorry, I don't understand why we shouldn't preserve the red zone. The
> function "foo", executing before the interrupt was called, used its red
> zone. If the interrupt does not adjust the stack pointer, who control that
> "foo" function's red zone would not be overwritten?

Please take a look at Exception- or Interrupt-Handler Procedures in
Intel64 and IA-32 Architectures Software Developer’s Manual vol 3.
There is no red zone on stack of interrupt handler, which is controlled
by processor, independent of any calling conventions.