From fa8d7c44170156d3164a156c4ee76f8bc9d0af6f Mon Sep 17 00:00:00 2001
From: Ed Maste <emaste@FreeBSD.org>
Date: Sun, 18 Jun 2017 00:08:38 +0000
Subject: [PATCH] arm: add .arch_extension sec for smc instruction

Clang 4.0 accepts the smc instruction with or without specifying
.arch_extension sec, but Clang 5.0 produces an error without it.

MFC after:	3 weeks
Sponsored by:	The FreeBSD Foundation
---
 sys/dev/psci/psci_arm.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/dev/psci/psci_arm.S b/sys/dev/psci/psci_arm.S
index 987e3d154e1b..f756aa951844 100644
--- a/sys/dev/psci/psci_arm.S
+++ b/sys/dev/psci/psci_arm.S
@@ -28,7 +28,8 @@
 #include <machine/asm.h>
 __FBSDID("$FreeBSD$");
 
-.arch_extension virt /* For hvc */
+.arch_extension sec	/* For smc */
+.arch_extension virt	/* For hvc */
 
 /*
  * int psci_hvc_despatch(register_t psci_fnid, register_t...)