newlib on x86-64

[Neal H. Walfield]

At Thu, 5 Feb 2009 11:05:20 +0100,
Hans Kester wrote:
> We use a different approach in our own OS. You can let the hardware
> switch to an interrupt stack. In that way the red zones will remain
> the same. You can read chapter 5.14 of this Intel 'Bible':
> http://download.intel.com/design/processor/manuals/253668.pdf.

Yes, I had considered that approach but I think it makes handling nest
interrupts harder.  Do have a good solution for managing stacks?  Or
do you just run with interrupts disabled while on the interrupt stack
and reenable them when you execute iret?

Neal