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authorDavid Hildenbrand <david@redhat.com>2019-02-25 21:03:17 +0100
committerCornelia Huck <cohuck@redhat.com>2019-03-04 11:49:31 +0100
commit86b59624c4aa2a383aca7a1798740779ac8967ce (patch)
treec00b592406218153b745d43fc5b3e35ef85cc5de /target/s390x
parent2a1cf844520748a18740a905e6286987d3e4e62d (diff)
s390x/tcg: Implement LOAD LENGTHENED short HFP to long HFP
Nice trick to load a 32 bit value into vector element 0 (32 bit element size) from memory, zeroing out element1. The short HFP to long HFP conversion really only is a shift. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20190225200318.16102-7-david@redhat.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Diffstat (limited to 'target/s390x')
-rw-r--r--target/s390x/insn-data.def2
-rw-r--r--target/s390x/translate.c6
2 files changed, 8 insertions, 0 deletions
diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index 61582372ab..fb6ee18650 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -598,6 +598,8 @@
F(0xed04, LDEB, RXE, Z, 0, m2_32u, new, f1, ldeb, 0, IF_BFP)
F(0xed05, LXDB, RXE, Z, 0, m2_64, new_P, x1, lxdb, 0, IF_BFP)
F(0xed06, LXEB, RXE, Z, 0, m2_32u, new_P, x1, lxeb, 0, IF_BFP)
+ F(0xb324, LDER, RXE, Z, 0, e2, new, f1, lde, 0, IF_AFP1)
+ F(0xed24, LDE, RXE, Z, 0, m2_32u, new, f1, lde, 0, IF_AFP1)
/* LOAD ROUNDED */
F(0xb344, LEDBR, RRE, Z, 0, f2, new, e1, ledb, 0, IF_BFP)
F(0xb345, LDXBR, RRE, Z, x2h, x2l, new, f1, ldxb, 0, IF_BFP)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index f7de77192c..59e71128d2 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -2725,6 +2725,12 @@ static DisasJumpType op_lxeb(DisasContext *s, DisasOps *o)
return DISAS_NEXT;
}
+static DisasJumpType op_lde(DisasContext *s, DisasOps *o)
+{
+ tcg_gen_shli_i64(o->out, o->in2, 32);
+ return DISAS_NEXT;
+}
+
static DisasJumpType op_llgt(DisasContext *s, DisasOps *o)
{
tcg_gen_andi_i64(o->out, o->in2, 0x7fffffff);