On 01/26/2014 11:25 AM, Peter Maydell wrote:
> + int elements = dsize / esize;
> + int i;
> + TCGv_i64 tcg_rd_hi, tcg_rd, tcg_rn;
> +
> + if (opsz >= 3) {
> + unallocated_encoding(s);
> + return;
> + }
> +
> + tcg_rn = tcg_temp_new_i64();
> + tcg_rd = tcg_const_i64(0);
> + tcg_rd_hi = tcg_const_i64(0);
> +
> + for (i = 0; i < elements; i++) {
> + int e_rev = (i & 0xf) ^ revmask;
> + int off = e_rev * esize;
> + read_vec_element(s, tcg_rn, rn, i, size);
> + if (off >= 64) {
> + tcg_gen_deposit_i64(tcg_rd_hi, tcg_rd_hi, tcg_rn, off - 64,
> esize);
> + } else {
> + tcg_gen_deposit_i64(tcg_rd, tcg_rd, tcg_rn, off, esize);
> + }
> + }
> + write_vec_element(s, tcg_rd, rd, 0, MO_64);
> + write_vec_element(s, tcg_rd_hi, rd, 1, MO_64);
Surely a special case for esize == 8 is in order, since that's bswap.
Otherwise,
Reviewed-by: Richard Henderson <[email protected]>
r~
