diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2014-01-31 14:47:37 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2014-01-31 14:47:37 +0000 |
| commit | 956d272eb2996e4d95f8a674256f8a63a0c1e8d4 (patch) | |
| tree | 1adc9d39bb4a0a73cc8e63b40eb69bc6ac636577 /target-arm | |
| parent | e1cea1144aff6498ddbcd60e2bff4172869b10d4 (diff) | |
target-arm: A64: Add logic ops from SIMD 3 same group
Add support for the logical operations (ORR, AND, BIC, ORN, EOR, BSL,
BIT and BIF) from the SIMD 3 register same group (C3.6.16).
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
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 | 73 |
1 files changed, 72 insertions, 1 deletions
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c index a215f083e0..aa53ddc381 100644 --- a/target-arm/translate-a64.c +++ b/target-arm/translate-a64.c @@ -5923,7 +5923,78 @@ static void disas_simd_three_reg_diff(DisasContext *s, uint32_t insn) /* Logic op (opcode == 3) subgroup of C3.6.16. */ static void disas_simd_3same_logic(DisasContext *s, uint32_t insn) { - unsupported_encoding(s, insn); + int rd = extract32(insn, 0, 5); + int rn = extract32(insn, 5, 5); + int rm = extract32(insn, 16, 5); + int size = extract32(insn, 22, 2); + bool is_u = extract32(insn, 29, 1); + bool is_q = extract32(insn, 30, 1); + TCGv_i64 tcg_op1 = tcg_temp_new_i64(); + TCGv_i64 tcg_op2 = tcg_temp_new_i64(); + TCGv_i64 tcg_res[2]; + int pass; + + tcg_res[0] = tcg_temp_new_i64(); + tcg_res[1] = tcg_temp_new_i64(); + + for (pass = 0; pass < (is_q ? 2 : 1); pass++) { + read_vec_element(s, tcg_op1, rn, pass, MO_64); + read_vec_element(s, tcg_op2, rm, pass, MO_64); + + if (!is_u) { + switch (size) { + case 0: /* AND */ + tcg_gen_and_i64(tcg_res[pass], tcg_op1, tcg_op2); + break; + case 1: /* BIC */ + tcg_gen_andc_i64(tcg_res[pass], tcg_op1, tcg_op2); + break; + case 2: /* ORR */ + tcg_gen_or_i64(tcg_res[pass], tcg_op1, tcg_op2); + break; + case 3: /* ORN */ + tcg_gen_orc_i64(tcg_res[pass], tcg_op1, tcg_op2); + break; + } + } else { + if (size != 0) { + /* B* ops need res loaded to operate on */ + read_vec_element(s, tcg_res[pass], rd, pass, MO_64); + } + + switch (size) { + case 0: /* EOR */ + tcg_gen_xor_i64(tcg_res[pass], tcg_op1, tcg_op2); + break; + case 1: /* BSL bitwise select */ + tcg_gen_xor_i64(tcg_op1, tcg_op1, tcg_op2); + tcg_gen_and_i64(tcg_op1, tcg_op1, tcg_res[pass]); + tcg_gen_xor_i64(tcg_res[pass], tcg_op2, tcg_op1); + break; + case 2: /* BIT, bitwise insert if true */ + tcg_gen_xor_i64(tcg_op1, tcg_op1, tcg_res[pass]); + tcg_gen_and_i64(tcg_op1, tcg_op1, tcg_op2); + tcg_gen_xor_i64(tcg_res[pass], tcg_res[pass], tcg_op1); + break; + case 3: /* BIF, bitwise insert if false */ + tcg_gen_xor_i64(tcg_op1, tcg_op1, tcg_res[pass]); + tcg_gen_andc_i64(tcg_op1, tcg_op1, tcg_op2); + tcg_gen_xor_i64(tcg_res[pass], tcg_res[pass], tcg_op1); + break; + } + } + } + + write_vec_element(s, tcg_res[0], rd, 0, MO_64); + if (!is_q) { + tcg_gen_movi_i64(tcg_res[1], 0); + } + write_vec_element(s, tcg_res[1], rd, 1, MO_64); + + tcg_temp_free_i64(tcg_op1); + tcg_temp_free_i64(tcg_op2); + tcg_temp_free_i64(tcg_res[0]); + tcg_temp_free_i64(tcg_res[1]); } /* Pairwise op subgroup of C3.6.16. */ |