Implement the wide three-reg-different operations:
SADDW, UADDW, SSUBW and USUBW.
Signed-off-by: Peter Maydell <peter.mayd...@linaro.org>
Reviewed-by: Richard Henderson <r...@twiddle.net>
---
target-arm/translate-a64.c | 41 ++++++++++++++++++++++++++++++++++++++++-
1 file changed, 40 insertions(+), 1 deletion(-)
diff --git a/target-arm/translate-a64.c b/target-arm/translate-a64.c
index 809fbdb..511f15e 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 */
--
1.8.5
