diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2014-02-20 10:35:56 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-02-20 10:35:56 +0000 |
| commit | dfc15c7cebaa467de7ada96d2688d4f5f4d3e532 (patch) | |
| tree | 1b48eb37e1fd295c4babe797765d22d31d230ec4 /target-arm | |
| parent | 70d7f984a0a9e03c1327487aed9877a4eca0e709 (diff) | |
target-arm: A64: Implement the wide 3-reg-different operations
Implement the wide three-reg-different operations:
SADDW, UADDW, SSUBW and USUBW.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-arm')
| -rw-r--r-- | target-arm/translate-a64.c | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index 809fbdbe93..511f15e588 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -7117,6 +7117,41 @@ static void handle_3rd_widening(DisasContext *s, int is_q, int is_u, int size, tcg_temp_free_i64(tcg_res[1]); } +static void handle_3rd_wide(DisasContext *s, int is_q, int is_u, int size, + int opcode, int rd, int rn, int rm) +{ + TCGv_i64 tcg_res[2]; + int part = is_q ? 2 : 0; + int pass; + + for (pass = 0; pass < 2; pass++) { + TCGv_i64 tcg_op1 = tcg_temp_new_i64(); + TCGv_i32 tcg_op2 = tcg_temp_new_i32(); + TCGv_i64 tcg_op2_wide = tcg_temp_new_i64(); + static NeonGenWidenFn * const widenfns[3][2] = { + { gen_helper_neon_widen_s8, gen_helper_neon_widen_u8 }, + { gen_helper_neon_widen_s16, gen_helper_neon_widen_u16 }, + { tcg_gen_ext_i32_i64, tcg_gen_extu_i32_i64 }, + }; + NeonGenWidenFn *widenfn = widenfns[size][is_u]; + + read_vec_element(s, tcg_op1, rn, pass, MO_64); + read_vec_element_i32(s, tcg_op2, rm, part + pass, MO_32); + widenfn(tcg_op2_wide, tcg_op2); + tcg_temp_free_i32(tcg_op2); + tcg_res[pass] = tcg_temp_new_i64(); + gen_neon_addl(size, (opcode == 3), + tcg_res[pass], tcg_op1, tcg_op2_wide); + tcg_temp_free_i64(tcg_op1); + tcg_temp_free_i64(tcg_op2_wide); + } + + for (pass = 0; pass < 2; pass++) { + write_vec_element(s, tcg_res[pass], rd, pass, MO_64); + tcg_temp_free_i64(tcg_res[pass]); + } +} + /* C3.6.15 AdvSIMD three different * 31 30 29 28 24 23 22 21 20 16 15 12 11 10 9 5 4 0 * +---+---+---+-----------+------+---+------+--------+-----+------+------+ @@ -7147,7 +7182,11 @@ static void disas_simd_three_reg_diff(DisasContext *s, uint32_t insn) case 1: /* SADDW, SADDW2, UADDW, UADDW2 */ case 3: /* SSUBW, SSUBW2, USUBW, USUBW2 */ /* 64 x 128 -> 128 */ - unsupported_encoding(s, insn); + if (size == 3) { + unallocated_encoding(s); + return; + } + handle_3rd_wide(s, is_q, is_u, size, opcode, rd, rn, rm); break; case 4: /* ADDHN, ADDHN2, RADDHN, RADDHN2 */ case 6: /* SUBHN, SUBHN2, RSUBHN, RSUBHN2 */ |