On 2 September 2015 at 18:57, Richard Henderson <r...@twiddle.net> wrote:
> Signed-off-by: Richard Henderson <r...@twiddle.net>
> ---
> target-arm/translate-a64.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
> index 74dd0f8..8c94edf 100644
> --- a/target-arm/translate-a64.c
> +++ b/target-arm/translate-a64.c
> @@ -3020,6 +3020,23 @@ static void disas_bitfield(DisasContext *s, uint32_t
> insn)
> tcg_gen_sari_i64(tcg_rd, tcg_tmp, ri);
> goto done;
> }
> + } else if (opc == 2) { /* UBFM */
> + if (ri == 0) { /* UXTB, UXTH, plus non-canonical AND */
> + tcg_gen_andi_i64(tcg_rd, tcg_tmp, bitmask64(si + 1));
> + return;
> + }
> + if (si == 63 || (si == 31 && ri <= si)) { /* LSR */
> + if (si == 31) {
> + tcg_gen_ext32u_i64(tcg_tmp, tcg_tmp);
> + }
> + tcg_gen_shri_i64(tcg_rd, tcg_tmp, ri);
> + return;
> + }
> + if (si + 1 == ri && si != bitsize - 1) { /* LSL */
> + int shift = bitsize - 1 - si;
> + tcg_gen_shli_i64(tcg_rd, tcg_tmp, shift);
> + goto done;
> + }
> }
>
> if (opc != 1) { /* SBFM or UBFM */
Reviewed-by: Peter Maydell <peter.mayd...@linaro.org>
thanks
-- PMM
