[Qemu-devel] [PULL SUBSYSTEM s390x 09/40] s390x/tcg: Implement VECTOR ELEMENT COMPARE *

[David Hildenbrand <david@redhat.com>]

Fairly easy to implement, we can make use of the existing CC helpers
cmps64 and cmpu64 - we siply have to sign extend the elements.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/insn-data.def      |  4 ++++
 target/s390x/translate_vx.inc.c | 20 ++++++++++++++++++++
 2 files changed, 24 insertions(+)

diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 64459465c5..52e398f515 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -1074,6 +1074,10 @@
     F(0xe7f0, VAVGL,   VRR_c, V,   0, 0, 0, 0, vavgl, 0, IF_VEC)
 /* VECTOR CHECKSUM */
     F(0xe766, VCKSM,   VRR_c, V,   0, 0, 0, 0, vcksm, 0, IF_VEC)
+/* VECTOR ELEMENT COMPARE */
+    F(0xe7db, VEC,     VRR_a, V,   0, 0, 0, 0, vec, cmps64, IF_VEC)
+/* VECTOR ELEMENT COMPARE LOGICAL */
+    F(0xe7d9, VECL,    VRR_a, V,   0, 0, 0, 0, vec, cmpu64, IF_VEC)
 
 #ifndef CONFIG_USER_ONLY
 /* COMPARE AND SWAP AND PURGE */
diff --git a/target/s390x/translate_vx.inc.c b/target/s390x/translate_vx.inc.c
index b9d40ffeb7..4d5af6e3b6 100644
--- a/target/s390x/translate_vx.inc.c
+++ b/target/s390x/translate_vx.inc.c
@@ -1369,3 +1369,23 @@ static DisasJumpType op_vcksm(DisasContext *s, DisasOps *o)
     tcg_temp_free_i32(sum);
     return DISAS_NEXT;
 }
+
+static DisasJumpType op_vec(DisasContext *s, DisasOps *o)
+{
+    uint8_t es = get_field(s->fields, m3);
+    const uint8_t enr = NUM_VEC_ELEMENTS(es) / 2 - 1;
+
+    if (es > ES_64) {
+        gen_program_exception(s, PGM_SPECIFICATION);
+        return DISAS_NORETURN;
+    }
+    if (s->fields->op2 == 0xdb) {
+        es |= MO_SIGN;
+    }
+
+    o->in1 = tcg_temp_new_i64();
+    o->in2 = tcg_temp_new_i64();
+    read_vec_element_i64(o->in1, get_field(s->fields, v1), enr, es);
+    read_vec_element_i64(o->in2, get_field(s->fields, v2), enr, es);
+    return DISAS_NEXT;
+}
-- 
2.20.1