2015-11-26 17:31:51 +00:00
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From d840c081f8082e8b9e63fead5306643975a97bb3 Mon Sep 17 00:00:00 2001
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From: Richard Earnshaw <Richard.Earnshaw@arm.com>
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Date: Thu, 20 Nov 2014 17:02:47 +0000
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Subject: [PATCH] * config/tc-arm.c (rotate_left): Avoid undefined behaviour
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when N = 0.
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---
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2017-12-02 20:44:39 +00:00
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gas/config/tc-arm.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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2015-11-26 17:31:51 +00:00
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--- a/gas/config/tc-arm.c
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+++ b/gas/config/tc-arm.c
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2017-12-02 20:44:39 +00:00
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@@ -7261,7 +7261,7 @@
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2015-11-26 17:31:51 +00:00
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/* Functions for operand encoding. ARM, then Thumb. */
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-#define rotate_left(v, n) (v << n | v >> (32 - n))
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+#define rotate_left(v, n) (v << (n & 31) | v >> ((32 - n) & 31))
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/* If VAL can be encoded in the immediate field of an ARM instruction,
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return the encoded form. Otherwise, return FAIL. */
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