diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2014-03-17 16:31:49 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-03-17 16:31:49 +0000 |
| commit | 73a81d10fda3cb45e62efd6829f19debb9f54073 (patch) | |
| tree | d18a4d76e48b4407a4b8bd561c38fa37f1d069f9 | |
| parent | 6781fa119f3f403bcab59142faa9581aff974358 (diff) | |
target-arm: A64: Implement SHLL, SHLL2
Implement the SHLL and SHLL2 instructions from the 2-reg-misc
category.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Message-id: 1394822294-14837-9-git-send-email-peter.maydell@linaro.org
| -rw-r--r-- | target-arm/translate-a64.c | 32 |
1 files changed, 31 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 4562facba2..7fca9ff5dc 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -8529,6 +8529,36 @@ static void handle_2misc_pairwise(DisasContext *s, int opcode, bool u, } } +static void handle_shll(DisasContext *s, bool is_q, int size, int rn, int rd) +{ + /* Implement SHLL and SHLL2 */ + int pass; + int part = is_q ? 2 : 0; + TCGv_i64 tcg_res[2]; + + for (pass = 0; pass < 2; pass++) { + static NeonGenWidenFn * const widenfns[3] = { + gen_helper_neon_widen_u8, + gen_helper_neon_widen_u16, + tcg_gen_extu_i32_i64, + }; + NeonGenWidenFn *widenfn = widenfns[size]; + TCGv_i32 tcg_op = tcg_temp_new_i32(); + + read_vec_element_i32(s, tcg_op, rn, part + pass, MO_32); + tcg_res[pass] = tcg_temp_new_i64(); + widenfn(tcg_res[pass], tcg_op); + tcg_gen_shli_i64(tcg_res[pass], tcg_res[pass], 8 << size); + + tcg_temp_free_i32(tcg_op); + } + + for (pass = 0; pass < 2; pass++) { + write_vec_element(s, tcg_res[pass], rd, pass, MO_64); + tcg_temp_free_i64(tcg_res[pass]); + } +} + /* C3.6.17 AdvSIMD two reg misc * 31 30 29 28 24 23 22 21 17 16 12 11 10 9 5 4 0 * +---+---+---+-----------+------+-----------+--------+-----+------+------+ @@ -8590,7 +8620,7 @@ static void disas_simd_two_reg_misc(DisasContext *s, uint32_t insn) unallocated_encoding(s); return; } - unsupported_encoding(s, insn); + handle_shll(s, is_q, size, rn, rd); return; case 0xa: /* CMLT */ if (u == 1) { |