From d840c081f8082e8b9e63fead5306643975a97bb3 Mon Sep 17 00:00:00 2001
From: Richard Earnshaw <Richard.Earnshaw@arm.com>
Date: Thu, 20 Nov 2014 17:02:47 +0000
Subject: [PATCH] * config/tc-arm.c (rotate_left): Avoid undefined behaviour
 when N = 0.

---
 gas/config/tc-arm.c | 2 +-
 1 files changed, 1 insertions(+), 1 deletion(-)

diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
index 5077f87..9100fb2 100644
--- a/gas/config/tc-arm.c
+++ b/gas/config/tc-arm.c
@@ -7251,7 +7251,7 @@ parse_operands (char *str, const unsigned int *pattern, bfd_boolean thumb)
 
 /* Functions for operand encoding.  ARM, then Thumb.  */
 
-#define rotate_left(v, n) (v << n | v >> (32 - n))
+#define rotate_left(v, n) (v << (n & 31) | v >> ((32 - n) & 31))
 
 /* If VAL can be encoded in the immediate field of an ARM instruction,
    return the encoded form.  Otherwise, return FAIL.  */
-- 
1.9.4