From 2f6026cb8b16cf00726e3c5625c023f196680f07 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Fri, 17 Mar 2017 12:52:08 -0700
Subject: [PATCH] Fix build with clang using external assembler

Cherry-picked from
https://github.com/openssl/openssl/commit/11208dcfb9105e8afa37233185decefd45e89e17
https://github.com/openssl/openssl/commit/fbab8baddef8d3346ae40ff068871e2ddaf10270
https://github.com/openssl/openssl/commit/6cf412c473d8145562b76219ce3da73b201b3255

Fixes

| ghash-armv4.S: Assembler messages:
| ghash-armv4.S:81: Error: bad instruction `ldrbpl r12,[r2,r3]'
| ghash-armv4.S:91: Error: bad instruction `ldrbpl r8,[r0,r3]'
| ghash-armv4.S:137: Error: bad instruction `ldrbne r12,[r2,#15]'
| ghash-armv4.S:224: Error: bad instruction `ldrbpl r12,[r0,r3]'
| clang-4.0: error: assembler command failed with exit code 1 (use -v to see invocation)
| make[2]: *** [<builtin>: ghash-armv4.o] Error 1

Upstream-Status: Backport

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 crypto/modes/asm/ghash-armv4.pl | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/crypto/modes/asm/ghash-armv4.pl b/crypto/modes/asm/ghash-armv4.pl
index 8ccc963ef..442fed4da 100644
--- a/crypto/modes/asm/ghash-armv4.pl
+++ b/crypto/modes/asm/ghash-armv4.pl
@@ -124,7 +124,10 @@ $code=<<___;
 #include "arm_arch.h"
 
 .text
+#if defined(__thumb2__) || defined(__clang__)
+.syntax	unified
+#endif
 .code	32
 
 #ifdef __clang__
 #define ldrplb	ldrbpl
-- 
2.12.0