Re: [PATCH v2] disas/riscv: Add decode for Zawrs extension

[Alistair Francis]

On Sat, Jul 6, 2024 at 2:54 AM Rob Bradford <rbradf...@rivosinc.com> wrote:
>
> From: Balaji Ravikumar <braviku...@rivosinc.com>
>
> Add disassembly support for these instructions from Zawrs:
>
> * wrs.sto
> * wrs.nto
>
> Signed-off-by: Balaji Ravikumar <braviku...@rivosinc.com>
> Signed-off-by: Rob Bradford <rbradf...@rivosinc.com>

Acked-by: Alistair Francis <alistair.fran...@wdc.com>

Alistair

> ---
>  disas/riscv.c | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/disas/riscv.c b/disas/riscv.c
> index 05b663ebfe..ff0323f0dd 100644
> --- a/disas/riscv.c
> +++ b/disas/riscv.c
> @@ -974,6 +974,8 @@ typedef enum {
>      rv_op_amomaxu_h = 943,
>      rv_op_amocas_b  = 944,
>      rv_op_amocas_h  = 945,
> +    rv_op_wrs_sto = 946,
> +    rv_op_wrs_nto = 947,
>  } rv_op;
>
>  /* register names */
> @@ -2232,6 +2234,8 @@ const rv_opcode_data rvi_opcode_data[] = {
>      { "amomaxu.h", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
>      { "amocas.b", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
>      { "amocas.h", rv_codec_r_a, rv_fmt_aqrl_rd_rs2_rs1, NULL, 0, 0, 0 },
> +    { "wrs.sto", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
> +    { "wrs.nto", rv_codec_none, rv_fmt_none, NULL, 0, 0, 0 },
>  };
>
>  /* CSR names */
> @@ -4000,6 +4004,8 @@ static void decode_inst_opcode(rv_decode *dec, rv_isa 
> isa)
>                      case 0: op = rv_op_ecall; break;
>                      case 32: op = rv_op_ebreak; break;
>                      case 64: op = rv_op_uret; break;
> +                    case 416: op = rv_op_wrs_nto; break;
> +                    case 928: op = rv_op_wrs_sto; break;
>                      }
>                      break;
>                  case 256:
> --
> 2.45.2
>
>