target/arm: Implement SVE dot product (indexed)

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180627043328.11531-34-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 18 insertions, 0 deletions

diff --git a/target/arm/translate-sve.c b/target/arm/translate-sve.c
index cf9c652e54..c080345b9c 100644
--- a/target/arm/translate-sve.c
+++ b/target/arm/translate-sve.c
@@ -3440,6 +3440,24 @@ static bool trans_DOT_zzz(DisasContext *s, arg_DOT_zzz *a, uint32_t insn)
     return true;
 }
 
+static bool trans_DOT_zzx(DisasContext *s, arg_DOT_zzx *a, uint32_t insn)
+{
+    static gen_helper_gvec_3 * const fns[2][2] = {
+        { gen_helper_gvec_sdot_idx_b, gen_helper_gvec_sdot_idx_h },
+        { gen_helper_gvec_udot_idx_b, gen_helper_gvec_udot_idx_h }
+    };
+
+    if (sve_access_check(s)) {
+        unsigned vsz = vec_full_reg_size(s);
+        tcg_gen_gvec_3_ool(vec_full_reg_offset(s, a->rd),
+                           vec_full_reg_offset(s, a->rn),
+                           vec_full_reg_offset(s, a->rm),
+                           vsz, vsz, a->index, fns[a->u][a->sz]);
+    }
+    return true;
+}
+
+
 /*
  *** SVE Floating Point Multiply-Add Indexed Group
  */