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* config/tc-arm.c (rotate_left): Avoid undefined behaviour when N = 0.

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Richard Earnshaw 2014-11-20 17:02:47 +00:00
parent c22ee0ad9d
commit d840c081f8
2 changed files with 6 additions and 1 deletions
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gas/ChangeLog
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@ -1,3 +1,8 @@
2014-11-20 Richard Earnshaw <rearnsha@arm.com>
* config/tc-arm.c (rotate_left): Avoid undefined behaviour when
N = 0.
2014-11-20 Richard Earnshaw <rearnsha@arm.com>
* config/tc-aarch64.c (warn_unpredictable_ldst): Check that transfer

2
gas/config/tc-arm.c
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@ -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. */