tree 945bc26f5ce9c2bcdccd0019435732d3b2af3093
parent 0e3261098ff41c40ce3381b8ad7cff330458da3d
author Peter Maydell <peter.maydell@linaro.org> 1299831144 +0000
committer Aurelien Jarno <aurelien@aurel32.net> 1301843978 +0200

target-arm: Correct ABD's handling of negative zeroes

Implement ABD by taking the absolute value of the difference
of the operands (as the ARM ARM specifies) rather than by
flipping the order of the operands to the subtract based
on the results of a comparison. The latter approch gives
the wrong answers for some edge cases like negative zero.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>