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

From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH v2] target-sh4: add atomic tas
Date: Thu, 3 Nov 2016 08:53:16 -0600
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0

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:

This image contains a "tas_test" that runs without
error with this change.

Signed-off-by: Laurent Vivier <address@hidden>
- don't use helper but atomic_fetch_or_i32
  Thank yo

Reviewed-by: Richard Henderson <address@hidden>


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