target/arm: Implement MVE VMLSLDAV

Implement the MVE insn VMLSLDAV, which multiplies source elements,
alternately adding and subtracting them, and accumulates into a
64-bit result in a pair of general purpose registers.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210617121628.20116-21-peter.maydell@linaro.org

1 files changed, 11 insertions, 0 deletions

diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index f8ceeac5a4..77b461c218 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -461,3 +461,14 @@ static bool trans_VMLALDAV_U(DisasContext *s, arg_vmlaldav *a)
     };
     return do_long_dual_acc(s, a, fns[a->size][a->x]);
 }
+
+static bool trans_VMLSLDAV(DisasContext *s, arg_vmlaldav *a)
+{
+    static MVEGenDualAccOpFn * const fns[4][2] = {
+        { NULL, NULL },
+        { gen_helper_mve_vmlsldavsh, gen_helper_mve_vmlsldavxsh },
+        { gen_helper_mve_vmlsldavsw, gen_helper_mve_vmlsldavxsw },
+        { NULL, NULL },
+    };
+    return do_long_dual_acc(s, a, fns[a->size][a->x]);
+}