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.ben...@linaro.org>
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <r...@twiddle.net>
---
target-arm/translate-a64.c | 73 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 72 insertions(+), 1 deletion(-)
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index a215f083..aa53ddc 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. */
--
1.8.5
