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