Re: [PATCH 2/2] disas/riscv: Add amocas.[w,d,q] instructions

[Alistair Francis]

On Fri, Dec 8, 2023 at 3:07 AM Rob Bradford <rbradford@rivosinc.com> wrote:
>
> Signed-off-by: Rob Bradford <rbradford@rivosinc.com>

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

Alistair

> ---
>  disas/riscv.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
>
> diff --git a/disas/riscv.c b/disas/riscv.c
> index e9458e574b..8a546d5ea5 100644
> --- a/disas/riscv.c
> +++ b/disas/riscv.c
> @@ -903,6 +903,9 @@ typedef enum {
>      rv_op_vwsll_vv = 872,
>      rv_op_vwsll_vx = 873,
>      rv_op_vwsll_vi = 874,
> +    rv_op_amocas_w = 875,
> +    rv_op_amocas_d = 876,
> +    rv_op_amocas_q = 877,
>  } rv_op;
>
>  /* register names */
> @@ -2090,6 +2093,9 @@ const rv_opcode_data rvi_opcode_data[] = {
>      { "vwsll.vv", rv_codec_v_r, rv_fmt_vd_vs2_vs1_vm, NULL, 0, 0, 0 },
>      { "vwsll.vx", rv_codec_v_r, rv_fmt_vd_vs2_rs1_vm, NULL, 0, 0, 0 },
>      { "vwsll.vi", rv_codec_v_i, rv_fmt_vd_vs2_uimm_vm, NULL, 0, 0, 0 },
> +    { "amocas.w", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
> +    { "amocas.d", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
> +    { "amocas.q", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
>  };
>
>  /* CSR names */
> @@ -2841,6 +2847,9 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa 
> isa)
>              case 34: op = rv_op_amoxor_w; break;
>              case 35: op = rv_op_amoxor_d; break;
>              case 36: op = rv_op_amoxor_q; break;
> +            case 42: op = rv_op_amocas_w; break;
> +            case 43: op = rv_op_amocas_d; break;
> +            case 44: op = rv_op_amocas_q; break;
>              case 66: op = rv_op_amoor_w; break;
>              case 67: op = rv_op_amoor_d; break;
>              case 68: op = rv_op_amoor_q; break;
> --
> 2.43.0
>
>