svn commit: r212076 - head/lib/libthr/thread
John Baldwin
jhb at freebsd.org
Thu Sep 2 10:41:05 UTC 2010
On Thursday, September 02, 2010 6:22:18 am Kostik Belousov wrote:
> On Thu, Sep 02, 2010 at 05:35:39PM +0000, David Xu wrote:
> > Kostik Belousov wrote:
> >
> > >>the tf_err may not be equal to ksi_addr! This may need to be fixed.
> > >>
> > >The change was introduced by
> > >r151316 | davidxu | 2005-10-14
> > > /* Old FreeBSD-style arguments. */
> > >- sf.sf_siginfo = code;
> > >- sf.sf_addr = regs->tf_err;
> > >+ sf.sf_siginfo = ksi->ksi_code;
> > >+ sf.sf_addr = (register_t)ksi->ksi_addr;
> > > sf.sf_ahu.sf_handler = catcher;
> > >
> > :(
> The rollback looks straightforward. I explicitely decided to not change
> any architecture that is not i386.
It may not be this simple. At one point we had a "feature" where we trashed
tf_err in the trapframe to store the address so it could be passed to sendsig
for this purpose. I think once we started using ksi_addr here we removed the
trashing of tf_err as it was no longer necessary.
--
John Baldwin
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