[m68k, sparc] Fix atomic_test_and_set

[Richard Henderson]

On 01/27/2012 09:34 AM, David Miller wrote:
> From: Richard Henderson <rth@redhat.com>
> Date: Fri, 27 Jan 2012 09:29:00 +1100
> 
>> Two of the patches have been posted here before; the libstdc++
>> patch was approved by Benjamin.
>>
>> All of the patches tested on sparc64-linux, and sanity checked
>> on x86_64-linux.  I've cross-compiled for m68k-linux, but I've
>> only been able to visually sanity check the code in libstdc++.
>>
>> Committed.  Hopefully that wraps up the atomic patches...
> 
> Why do you need to define TARGET_ATOMIC_TEST_AND_SET_TRUEVAL to 0xff
> on sparc if you're going to convert the result into a bool in the
> expander?

Because the value stored in memory is 0xff, and not a boolean.
The boolean is only the result type of __atomic_test_and_set.


r~