On 3/12/20 7:58 AM, LIU Zhiwei wrote:
> +static bool trans_vsetvl(DisasContext *ctx, arg_vsetvl * a)
> +{
> + TCGv s1, s2, dst;
> + s2 = tcg_temp_new();
> + dst = tcg_temp_new();
> +
> + /* Using x0 as the rs1 register specifier, encodes an infinite AVL */
> + if (a->rs1 == 0) {
> + /* As the mask is at least one bit, RV_VLEN_MAX is >= VLMAX */
> + s1 = tcg_const_tl(RV_VLEN_MAX);
> + } else {
> + s1 = tcg_temp_new();
> + gen_get_gpr(s1, a->rs1);
> + }
> + gen_get_gpr(s2, a->rs2);
> + gen_helper_vsetvl(dst, cpu_env, s1, s2);
> + gen_set_gpr(a->rd, dst);
> + tcg_gen_movi_tl(cpu_pc, ctx->pc_succ_insn);
> + exit_tb(ctx);
You can use lookup_and_goto_ptr here. But either way,
Reviewed-by: Richard Henderson <richard.hender...@linaro.org>
r~
