Re: [RFC PATCH v2 43/44] target/loongarch: Implement vldi

[Richard Henderson]

On 3/27/23 20:06, Song Gao wrote:
> +static bool trans_vldi(DisasContext *ctx, arg_vldi *a)
> +{
> +    int sel, vece;
> +    uint64_t value;
> +    CHECK_SXE;
> +
> +    sel = (a->imm >> 12) & 0x1;
> +
> +    if (sel) {
> +        /* VSETI.D */
> +        value = vldi_get_value(ctx, a->imm);
> +        vece = MO_64;
> +    } else {
> +       /*
> +        * VLDI.B/H/W/D
> +        *  a->imm bit [11:10] is vece.
> +        *  a->imm bit [9:0] is value;
> +        */
> +       value = ((int32_t)(a->imm << 22)) >> 22;
> +       vece = (a->imm >> 10) & 0x3;
> +    }
> +
> +    tcg_gen_gvec_dup_i64(vece, vreg_full_offset(a->vd), 16, 16,
> +                         tcg_constant_i64(value));
> +    return true;
> +}

I think you should finish this decode in insns.decode,
especially since we are using that for disassembly.


r~