Date: Fri, 01 Sep 2006 11:40:12 -0700 From: Peter Grehan <grehan@freebsd.org> To: Marcel Moolenaar <xcllnt@mac.com> Cc: ppc@FreeBSD.org Subject: Re: Status of threading and TLS Message-ID: <44F87E8C.9000705@freebsd.org> In-Reply-To: <933C0437-DDF8-4A61-83BA-F4920D9E6E96@mac.com> References: <933C0437-DDF8-4A61-83BA-F4920D9E6E96@mac.com>
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Hi Marcel,
> If anyone has any suggestions why for libpthread we end up
> with r2 off by 8 bytes, I'm happy to hear it...
I don't have access to a PPC machine at the moment, but would it have
anything to do with:
struct ppc32_tp {
void *tp_dtv; /* dynamic thread vector */
uint32_t _reserved_;
double tp_tls[0]; /* static TLS */
};
I think the last element was put in for alignment, but would that
possibly have an effect somewhere else, in that it's forcing an 8-byte
pad somewhere ?
If the last element is removed, does it make a difference ? I saw that
the libthr code doesn't have a member.
later,
Peter.
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