Also fairly easy to implement. One issue we have is that exceptions will
result in some vectors already being modified. At least handle it
consistently per vector by using a temporary vector. Good enough for
now, add a FIXME.
Signed-off-by: David Hildenbrand <da...@redhat.com>
---
target/s390x/insn-data.def | 2 ++
target/s390x/translate_vx.inc.c | 26 ++++++++++++++++++++++++++
2 files changed, 28 insertions(+)
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 46a0739703..65ff8bbd2e 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -1000,6 +1000,8 @@
F(0xe721, VLGV, VRS_c, V, la2, 0, r1, 0, vlgv, 0, IF_VEC)
/* VECTOR LOAD LOGICAL ELEMENT AND ZERO */
F(0xe704, VLLEZ, VRX, V, la2, 0, 0, 0, vllez, 0, IF_VEC)
+/* VECTOR LOAD MULTIPLE */
+ F(0xe736, VLM, VRS_a, V, la2, 0, 0, 0, vlm, 0, 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 301408d1f2..c9f57afd4a 100644
--- a/target/s390x/translate_vx.inc.c
+++ b/target/s390x/translate_vx.inc.c
@@ -377,3 +377,29 @@ static DisasJumpType op_vllez(DisasContext *s, DisasOps *o)
gen_gvec_mov(get_field(s->fields, v1), TMP_VREG_0);
return DISAS_NEXT;
}
+
+static DisasJumpType op_vlm(DisasContext *s, DisasOps *o)
+{
+ const uint8_t v3 = get_field(s->fields, v3);
+ uint8_t v1 = get_field(s->fields, v1);
+
+ while (v3 < v1 || (v3 - v1 + 1) > 16) {
+ gen_program_exception(s, PGM_SPECIFICATION);
+ return DISAS_NORETURN;
+ }
+
+ /*
+ * FIXME: On exceptions we must not modify any vector.
+ */
+ for (;; v1++) {
+ load_vec_element(s, TMP_VREG_0, 0, o->addr1, MO_64);
+ gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 8);
+ load_vec_element(s, TMP_VREG_0, 1, o->addr1, MO_64);
+ gen_gvec_mov(v1, TMP_VREG_0);
+ if (v1 == v3) {
+ break;
+ }
+ gen_addi_and_wrap_i64(s, o->addr1, o->addr1, 8);
+ }
+ return DISAS_NEXT;
+}
--
2.17.2
