4 files changed, 14 insertions, 14 deletions
diff --git a/target-s390x/helper.h b/target-s390x/helper.h
index 3591a92ada..d3a30cb4a0 100644
--- a/target-s390x/helper.h
+++ b/target-s390x/helper.h
@@ -84,7 +84,7 @@ DEF_HELPER_3(servc, i32, env, i32, i64)
 DEF_HELPER_4(diag, i64, env, i32, i64, i64)
 DEF_HELPER_3(load_psw, void, env, i64, i64)
 DEF_HELPER_FLAGS_2(spx, TCG_CALL_NO_RWG, void, env, i64)
-DEF_HELPER_2(stck, i32, env, i64)
+DEF_HELPER_FLAGS_1(stck, TCG_CALL_NO_RWG_SE, i64, env)
 DEF_HELPER_2(stcke, i32, env, i64)
 DEF_HELPER_FLAGS_2(sckc, TCG_CALL_NO_RWG, void, env, i64)
 DEF_HELPER_FLAGS_2(stckc, TCG_CALL_NO_RWG, void, env, i64)
diff --git a/target-s390x/insn-data.def b/target-s390x/insn-data.def
index 824e9dc526..4404791661 100644
--- a/target-s390x/insn-data.def
+++ b/target-s390x/insn-data.def
@@ -640,6 +640,9 @@
     C(0x8000, SSM,     S,     Z,   0, m2_8u, 0, 0, ssm, 0)
 /* SIGNAL PROCESSOR */
     C(0xae00, SIGP,    RS_a,  Z,   r3_o, a2, 0, 0, sigp, 0)
+/* STORE CLOCK */
+    C(0xb205, STCK,    S,     Z,   la2, 0, new, m1_64, stck, 0)
+    C(0xb27c, STCKF,   S,     Z,   la2, 0, new, m1_64, stck, 0)
 /* STORE CONTROL */
     C(0xb600, STCTL,   RS_a,  Z,   0, a2, 0, 0, stctl, 0)
     C(0xeb25, STCTG,   RSY_a, Z,   0, a2, 0, 0, stctg, 0)
diff --git a/target-s390x/misc_helper.c b/target-s390x/misc_helper.c
index c16359134a..f1edf6c67b 100644
--- a/target-s390x/misc_helper.c
+++ b/target-s390x/misc_helper.c
@@ -154,11 +154,9 @@ static inline uint64_t clock_value(CPUS390XState *env)
 }
 
 /* Store Clock */
-uint32_t HELPER(stck)(CPUS390XState *env, uint64_t a1)
+uint64_t HELPER(stck)(CPUS390XState *env)
 {
-    cpu_stq_data(env, a1, clock_value(env));
-
-    return 0;
+    return clock_value(env);
 }
 
 /* Store Clock Extended */
diff --git a/target-s390x/translate.c b/target-s390x/translate.c
index e835df0ce9..624ee8d99a 100644
--- a/target-s390x/translate.c
+++ b/target-s390x/translate.c
@@ -1033,15 +1033,6 @@ static void disas_b2(CPUS390XState *env, DisasContext *s, int op,
     LOG_DISAS("disas_b2: op 0x%x r1 %d r2 %d\n", op, r1, r2);
 
     switch (op) {
-    case 0x05: /* STCK     D2(B2)     [S] */
-        /* Store Clock */
-        decode_rs(s, insn, &r1, &r3, &b2, &d2);
-        tmp = get_address(s, 0, b2, d2);
-        potential_page_fault(s);
-        gen_helper_stck(cc_op, cpu_env, tmp);
-        set_cc_static(s);
-        tcg_temp_free_i64(tmp);
-        break;
     case 0x06: /* SCKC     D2(B2)     [S] */
         /* Set Clock Comparator */
         check_privileged(s);
@@ -2924,6 +2915,14 @@ static ExitStatus op_ssm(DisasContext *s, DisasOps *o)
     return NO_EXIT;
 }
 
+static ExitStatus op_stck(DisasContext *s, DisasOps *o)
+{
+    gen_helper_stck(o->out, cpu_env);
+    /* ??? We don't implement clock states.  */
+    gen_op_movi_cc(s, 0);
+    return NO_EXIT;
+}
+
 static ExitStatus op_stctg(DisasContext *s, DisasOps *o)
 {
     TCGv_i32 r1 = tcg_const_i32(get_field(s->fields, r1));