22 lines
800 B
Diff
22 lines
800 B
Diff
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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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diff --git a/gas/config/tc-arm.c b/gas/config/tc-arm.c
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index 5077f87..9100fb2 100644
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--- a/gas/config/tc-arm.c
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+++ b/gas/config/tc-arm.c
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@@ -7251,7 +7251,7 @@ parse_operands (char *str, const unsigned int *pattern, bfd_boolean thumb)
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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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