Re: [Qemu-devel] [PATCH v2] target-sh4: add atomic tas

[Richard Henderson]

On 11/03/2016 08:07 AM, Laurent Vivier wrote:
> Implement real atomic tas:
>
>     When (Rn) = 0, 1 -> T
>     Otherwise, 0 -> T
>     In both cases, 1 -> MSB of (Rn)
>
> using atomic_fetch_or_i32() and setcondi_i32().
>
> Tested with image from:
> http://wiki.qemu.org/download/sh-test-0.2.tar.bz2
>
> This image contains a "tas_test" that runs without
> error with this change.
>
> Signed-off-by: Laurent Vivier <address@hidden>
> ---
> v2:
> - don't use helper but atomic_fetch_or_i32
>   Thank yo

Reviewed-by: Richard Henderson <address@hidden>


r~