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Make it possible for the signal handler to act on #ss. Load the

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canonical user data segment' selector into %ss when calling the
handler.

Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
This commit is contained in:
Konstantin Belousov 2015-03-28 09:03:54 +00:00
parent f024d1a3a3
commit a9eb27a990
1 changed files with 1 additions and 0 deletions
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sys/amd64/amd64/machdep.c
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@ -443,6 +443,7 @@ sendsig(sig_t catcher, ksiginfo_t *ksi, sigset_t *mask)
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;