target/s390x: Check HAVE_ATOMIC128 and HAVE_CMPXCHG128 at translate

Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 18 insertions, 7 deletions

diff --git a/target/s390x/translate.c b/target/s390x/translate.c
index a7bd689..b5bd56b 100644
--- a/target/s390x/translate.c
+++ b/target/s390x/translate.c
@@ -44,6 +44,7 @@
 #include "trace-tcg.h"
 #include "exec/translator.h"
 #include "exec/log.h"
+#include "qemu/atomic128.h"
 
 
 /* Information that (most) every instruction needs to manipulate.  */
@@ -2040,6 +2041,7 @@ static DisasJumpType op_cdsg(DisasContext *s, DisasOps *o)
     int r3 = get_field(s->fields, r3);
     int d2 = get_field(s->fields, d2);
     int b2 = get_field(s->fields, b2);
+    DisasJumpType ret = DISAS_NEXT;
     TCGv_i64 addr;
     TCGv_i32 t_r1, t_r3;
 
@@ -2047,17 +2049,20 @@ static DisasJumpType op_cdsg(DisasContext *s, DisasOps *o)
     addr = get_address(s, 0, b2, d2);
     t_r1 = tcg_const_i32(r1);
     t_r3 = tcg_const_i32(r3);
-    if (tb_cflags(s->base.tb) & CF_PARALLEL) {
+    if (!(tb_cflags(s->base.tb) & CF_PARALLEL)) {
+        gen_helper_cdsg(cpu_env, addr, t_r1, t_r3);
+    } else if (HAVE_CMPXCHG128) {
         gen_helper_cdsg_parallel(cpu_env, addr, t_r1, t_r3);
     } else {
-        gen_helper_cdsg(cpu_env, addr, t_r1, t_r3);
+        gen_helper_exit_atomic(cpu_env);
+        ret = DISAS_NORETURN;
     }
     tcg_temp_free_i64(addr);
     tcg_temp_free_i32(t_r1);
     tcg_temp_free_i32(t_r3);
 
     set_cc_static(s);
-    return DISAS_NEXT;
+    return ret;
 }
 
 static DisasJumpType op_csst(DisasContext *s, DisasOps *o)
@@ -3034,10 +3039,13 @@ static DisasJumpType op_lpd(DisasContext *s, DisasOps *o)
 
 static DisasJumpType op_lpq(DisasContext *s, DisasOps *o)
 {
-    if (tb_cflags(s->base.tb) & CF_PARALLEL) {
+    if (!(tb_cflags(s->base.tb) & CF_PARALLEL)) {
+        gen_helper_lpq(o->out, cpu_env, o->in2);
+    } else if (HAVE_ATOMIC128) {
         gen_helper_lpq_parallel(o->out, cpu_env, o->in2);
     } else {
-        gen_helper_lpq(o->out, cpu_env, o->in2);
+        gen_helper_exit_atomic(cpu_env);
+        return DISAS_NORETURN;
     }
     return_low128(o->out2);
     return DISAS_NEXT;
@@ -4414,10 +4422,13 @@ static DisasJumpType op_stmh(DisasContext *s, DisasOps *o)
 
 static DisasJumpType op_stpq(DisasContext *s, DisasOps *o)
 {
-    if (tb_cflags(s->base.tb) & CF_PARALLEL) {
+    if (!(tb_cflags(s->base.tb) & CF_PARALLEL)) {
+        gen_helper_stpq(cpu_env, o->in2, o->out2, o->out);
+    } else if (HAVE_ATOMIC128) {
         gen_helper_stpq_parallel(cpu_env, o->in2, o->out2, o->out);
     } else {
-        gen_helper_stpq(cpu_env, o->in2, o->out2, o->out);
+        gen_helper_exit_atomic(cpu_env);
+        return DISAS_NORETURN;
     }
     return DISAS_NEXT;
 }