[Qemu-devel] [PATCH v2 for-2.12 07/10] s390x/tcg: Implement SIGNAL ADAPTER instruction

[David Hildenbrand <david@redhat.com>]

KVM suppresses SIGA, setting cc=3. Let's do the same for TCG, so we're at
least equal.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/insn-data.def | 1 +
 target/s390x/translate.c   | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/target/s390x/insn-data.def b/target/s390x/insn-data.def
index c7353e7f11..f7b66b0091 100644
--- a/target/s390x/insn-data.def
+++ b/target/s390x/insn-data.def
@@ -1056,6 +1056,7 @@
     C(0xb238, RSCH,    S,     Z,   0, 0, 0, 0, rsch, 0)
     C(0xb237, SAL,     S,     Z,   0, 0, 0, 0, sal, 0)
     C(0xb23c, SCHM,    S,     Z,   0, insn, 0, 0, schm, 0)
+    C(0xb274, SIGA,    S,     Z,   0, 0, 0, 0, siga, 0)
     C(0xb23a, STCPS,   S,     Z,   0, 0, 0, 0, stcps, 0)
     C(0xb233, SSCH,    S,     Z,   0, insn, 0, 0, ssch, 0)
     C(0xb239, STCRW,   S,     Z,   0, insn, 0, 0, stcrw, 0)
diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index 5c2432678c..1e4079464a 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -4102,6 +4102,14 @@ static ExitStatus op_schm(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+static ExitStatus op_siga(DisasContext *s, DisasOps *o)
+{
+    check_privileged(s);
+    /* From KVM code: Not provided, set CC = 3 for subchannel not operational */
+    gen_op_movi_cc(s, 3);
+    return NO_EXIT;
+}
+
 static ExitStatus op_stcps(DisasContext *s, DisasOps *o)
 {
     check_privileged(s);
-- 
2.14.3