Maintaining multiple stacks

[Tom Bachmann]

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Hello,
[I'm not registered to the list, so please cc me.]

I was wondering if it would be possible to teach gcc to maintain
multiple stacks, something like

void foo ()
{
  int on_normal_stack;
  int on_special_stack attribute ((stack (mystack)));
}

where mystack is a (thread-local) global variable that is treated as
another stackpointer. Of course I know that there is no attribute like
that, but I was just wondering if I overlooked something.

The rationale is that I am writing a system with different types of
pages, but it would be nice to still automatically allocate the space.

thanks
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