On Fri, 4 May 2001, Bruce Evans wrote:
> On Wed, 2 May 2001, Daniel Eischen wrote:
> > On Wed, 2 May 2001, Bruce Evans wrote:
> > >
> > > There is also the osendsig() case, and corresponding code in several
> > > emulators.
> >
> > I don't think we care too much about osendsig() since anything
> > that uses a new threads library will have to be recompiled
> > and wouldn't use the old routines. I think the same is true
> > for emulators; an application that used the new threads library
> > wouldn't be running in emulation would it?
>
> A library running under an emulator might. Non-emulated Linux seems
> to pass %fs and %gs to signal handlers unchanged, so there is a precedent
> for doing things like you want. Go ahead. The Linux emulator certainly
> needs to do it the same as Linux.
OK, thanks. Here's my guess at what should be changed for the Linux
emulator. If this looks correct, I'll commit it.
Hmm, I wonder how linuxthreads works under FreeBSD without this
change...
--
Dan Eischen
Index: linux/linux_sysvec.c
===================================================================
RCS file: /home/ncvs/src/sys/i386/linux/linux_sysvec.c,v
retrieving revision 1.78
diff -u -r1.78 linux_sysvec.c
--- linux/linux_sysvec.c 2001/05/01 08:12:52 1.78
+++ linux/linux_sysvec.c 2001/05/04 22:49:41
@@ -338,8 +338,6 @@
regs->tf_cs = _ucodesel;
regs->tf_ds = _udatasel;
regs->tf_es = _udatasel;
- regs->tf_fs = _udatasel;
- load_gs(_udatasel);
regs->tf_ss = _udatasel;
}
@@ -472,8 +470,6 @@
regs->tf_cs = _ucodesel;
regs->tf_ds = _udatasel;
regs->tf_es = _udatasel;
- regs->tf_fs = _udatasel;
- load_gs(_udatasel);
regs->tf_ss = _udatasel;
}
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