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    target-arm: Split DISAS_YIELD from DISAS_WFE · 049e24a1
    Peter Maydell 提交于
    Currently we use DISAS_WFE for both WFE and YIELD instructions.
    This is functionally correct because at the moment both of them
    are implemented as "yield this CPU back to the top level loop so
    another CPU has a chance to run". However it's rather confusing
    that YIELD ends up calling HELPER(wfe), and if we ever want to
    implement real behaviour for WFE and SEV it's likely to trip us up.
    
    Split out the yield codepath to use DISAS_YIELD and a new
    HELPER(yield) function, and have HELPER(wfe) call HELPER(yield).
    Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
    Message-id: 1435672316-3311-2-git-send-email-peter.maydell@linaro.org
    Reviewed-by: NPeter Crosthwaite <peter.crosthwaite@xilinx.com>
    049e24a1
helper.h 21.0 KB