On 9/2/21 2:40 PM, Song Gao wrote:
+static bool gen_r2_ui6(DisasContext *ctx, arg_slli_d *a,
+                       void(*func)(TCGv, TCGv, TCGv))
+{
+    TCGv dest = gpr_dst(ctx, a->rd);
+    TCGv src1 = gpr_src(ctx, a->rj, EXT_NONE);
+    TCGv src2 = tcg_constant_tl(a->ui6);
+
+    TCGv t0 = temp_new(ctx);
+
+    tcg_gen_andi_tl(t0, src2, 0x7f);

0x3f.

That said, these shouldn't require masking, because they've just come from the decoder as 5 and 6-bit operands.

You should prefer to use the tcg_gen_* functions that take integers:

    void (*func)(TCGv, TCGv, target_long)

passing tcg_gen_shli_tl, etc.  It will make all of these simpler.


r~

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