Re: [PATCH v1 3/5] target/microblaze: mbar: Add support for data-access barriers

[Alistair Francis]

On Mon, Aug 17, 2020 at 7:02 AM Edgar E. Iglesias
<edgar.iglesias@gmail.com> wrote:
>
> From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
>
> Add support for data-access barriers.
>
> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/microblaze/translate.c | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
> index c1be76d4c8..c58f334a0f 100644
> --- a/target/microblaze/translate.c
> +++ b/target/microblaze/translate.c
> @@ -1233,6 +1233,11 @@ static void dec_br(DisasContext *dc)
>
>          LOG_DIS("mbar %d\n", mbar_imm);
>
> +        /* Data access memory barrier.  */
> +        if ((mbar_imm & 2) == 0) {
> +            tcg_gen_mb(TCG_BAR_SC | TCG_MO_ALL);
> +        }
> +
>          /* mbar IMM & 16 decodes to sleep.  */
>          if (mbar_imm & 16) {
>              TCGv_i32 tmp_hlt = tcg_const_i32(EXCP_HLT);
> --
> 2.25.1
>
>