svn commit: r280876 - stable/10/sys/amd64/amd64

[Konstantin Belousov]

Author: kib
Date: Tue Mar 31 01:05:34 2015
New Revision: 280876
URL: https://svnweb.freebsd.org/changeset/base/280876

Log:
  MFC r280781:
  Make it possible for the signal handler to act on #ss.  Load the
  canonical user data segment' selector into %ss when calling the
  handler.

Modified:
  stable/10/sys/amd64/amd64/machdep.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/amd64/amd64/machdep.c
==============================================================================
--- stable/10/sys/amd64/amd64/machdep.c	Tue Mar 31 00:59:30 2015	(r280875)
+++ stable/10/sys/amd64/amd64/machdep.c	Tue Mar 31 01:05:34 2015	(r280876)
@@ -429,6 +429,7 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, 
 	regs->tf_rflags &= ~(PSL_T | PSL_D);
 	regs->tf_cs = _ucodesel;
 	regs->tf_ds = _udatasel;
+	regs->tf_ss = _udatasel;
 	regs->tf_es = _udatasel;
 	regs->tf_fs = _ufssel;
 	regs->tf_gs = _ugssel;