This is the mail archive of the
libc-alpha@sources.redhat.com
mailing list for the glibc project.
Re: [Various] libc/2512: linxuthreads does not allow signal handlers to run on alternate stack
On Tue, Sep 04, 2001 at 11:43:15PM -0700, drepper@redhat.com wrote:
> Andreas Jaeger <aj@suse.de> writes:
>
> > One without.
>
> When not using %gs the thread is determined based on the stack
> pointer. How can this possibly work with an alternative stack?
It could work if non-floating-stacks libpthread intercepted sigaltstack,
which would:
a) set __pthread_nonstandard_stacks = 1
b) record that alternate stack into thread structure
and __pthread_find_self would check those too.
Ugly as hell, but could possibly work. Not that I want to do anything about
it.
BTW: Could we enable %gs threads on non-i686 IA-32 too?
Jakub