[Openmcl-devel] Solaris x86-64 and %gs
gb at clozure.com
Fri Jan 11 23:49:22 PST 2008
I poked around a little in the OpenSolaris sources.
I think that the incantation we want to use in the #ifdef SOLARIS
case of setup_tcr_extra_segment() is something like:
_lwp_setprivate(lwp, _LWP_GSBASE, tcr);
where lwp is a "lightweight process" and there's some correspondence
between an lwp and a pthread which would probably be clear to
anyone who's read Solaris thread documentation recently.
(Or at least more recently than I have ...)
My best guess is that we want to try to arrange that the
correspondence between pthreads and Solaris LWPs is 1:1. I don't know
if that's the default, but I assume that there's some way to arrange
that 1:1 correspondence and that other things (reasonable behavior of
alternate signal stacks ?) may depend on that 1:1 mapping.
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