s390x/tcg: Implement VECTOR AVERAGE LOGICAL

Similar to VECTOR AVERAGE but without sign extension.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c
index 065ace6bda..3ff0682135 100644
--- a/target/s390x/translate_vx.inc.c
+++ b/target/s390x/translate_vx.inc.c
@@ -1256,3 +1256,51 @@ static DisasJumpType op_vavg(DisasContext *s, DisasOps *o)
                get_field(s->fields, v3), &g[es]);
     return DISAS_NEXT;
 }
+
+static void gen_avgl_i32(TCGv_i32 d, TCGv_i32 a, TCGv_i32 b)
+{
+    TCGv_i64 t0 = tcg_temp_new_i64();
+    TCGv_i64 t1 = tcg_temp_new_i64();
+
+    tcg_gen_extu_i32_i64(t0, a);
+    tcg_gen_extu_i32_i64(t1, b);
+    tcg_gen_add_i64(t0, t0, t1);
+    tcg_gen_addi_i64(t0, t0, 1);
+    tcg_gen_shri_i64(t0, t0, 1);
+    tcg_gen_extrl_i64_i32(d, t0);
+
+    tcg_temp_free(t0);
+    tcg_temp_free(t1);
+}
+
+static void gen_avgl_i64(TCGv_i64 dl, TCGv_i64 al, TCGv_i64 bl)
+{
+    TCGv_i64 dh = tcg_temp_new_i64();
+    TCGv_i64 zero = tcg_const_i64(0);
+
+    tcg_gen_add2_i64(dl, dh, al, zero, bl, zero);
+    gen_addi2_i64(dl, dh, dl, dh, 1);
+    tcg_gen_extract2_i64(dl, dl, dh, 1);
+
+    tcg_temp_free_i64(dh);
+    tcg_temp_free_i64(zero);
+}
+
+static DisasJumpType op_vavgl(DisasContext *s, DisasOps *o)
+{
+    const uint8_t es = get_field(s->fields, m4);
+    static const GVecGen3 g[4] = {
+        { .fno = gen_helper_gvec_vavgl8, },
+        { .fno = gen_helper_gvec_vavgl16, },
+        { .fni4 = gen_avgl_i32, },
+        { .fni8 = gen_avgl_i64, },
+    };
+
+    if (es > ES_64) {
+        gen_program_exception(s, PGM_SPECIFICATION);
+        return DISAS_NORETURN;
+    }
+    gen_gvec_3(get_field(s->fields, v1), get_field(s->fields, v2),
+               get_field(s->fields, v3), &g[es]);
+    return DISAS_NEXT;
+}