[qemu-s390x] [PATCH v2 24/32] s390x/tcg: Implement VECTOR SCATTER ELEMENT

[David Hildenbrand]

Similar to VECTOR GATHER ELEMENT, but the other direction.

Reviewed-by: Richard Henderson <address@hidden>
Signed-off-by: David Hildenbrand <address@hidden>
---
 target/s390x/insn-data.def      |  3 +++
 target/s390x/translate_vx.inc.c | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 99fb697d91..8d7c834e7d 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -1027,6 +1027,9 @@
     F(0xe74d, VREP,    VRI_c, V,   0, 0, 0, 0, vrep, 0, IF_VEC)
 /* VECTOR REPLICATE IMMEDIATE */
     F(0xe745, VREPI,   VRI_a, V,   0, 0, 0, 0, vrepi, 0, IF_VEC)
+/* VECTOR SCATTER ELEMENT */
+    E(0xe71b, VSCEF,   VRV,   V,   la2, 0, 0, 0, vsce, 0, ES_32, IF_VEC)
+    E(0xe71a, VSCEG,   VRV,   V,   la2, 0, 0, 0, vsce, 0, ES_64, 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 9f065c0728..dacb115c79 100644
--- a/target/s390x/translate_vx.inc.c
+++ b/target/s390x/translate_vx.inc.c
@@ -717,3 +717,25 @@ static DisasJumpType op_vrepi(DisasContext *s, DisasOps *o)
     gen_gvec_dupi(es, get_field(s->fields, v1), data);
     return DISAS_NEXT;
 }
+
+static DisasJumpType op_vsce(DisasContext *s, DisasOps *o)
+{
+    const uint8_t es = s->insn->data;
+    const uint8_t enr = get_field(s->fields, m3);
+    TCGv_i64 tmp;
+
+    if (!valid_vec_element(enr, es)) {
+        gen_program_exception(s, PGM_SPECIFICATION);
+        return DISAS_NORETURN;
+    }
+
+    tmp = tcg_temp_new_i64();
+    read_vec_element_i64(tmp, get_field(s->fields, v2), enr, es);
+    tcg_gen_add_i64(o->addr1, o->addr1, tmp);
+    gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 0);
+
+    read_vec_element_i64(tmp, get_field(s->fields, v1), enr, es);
+    tcg_gen_qemu_st_i64(tmp, o->addr1, get_mem_index(s), MO_TE | es);
+    tcg_temp_free_i64(tmp);
+    return DISAS_NEXT;
+}
-- 
2.17.2