target/s390x: Use Int128 for return from CLST

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 4 insertions, 7 deletions

diff --git a/target/s390x/tcg/mem_helper.c b/target/s390x/tcg/mem_helper.c
index cb82cd1c1d..9be42851d8 100644
--- a/target/s390x/tcg/mem_helper.c
+++ b/target/s390x/tcg/mem_helper.c
@@ -886,7 +886,7 @@ void HELPER(srstu)(CPUS390XState *env, uint32_t r1, uint32_t r2)
 }
 
 /* unsigned string compare (c is string terminator) */
-uint64_t HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2)
+Int128 HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2)
 {
     uintptr_t ra = GETPC();
     uint32_t len;
@@ -904,23 +904,20 @@ uint64_t HELPER(clst)(CPUS390XState *env, uint64_t c, uint64_t s1, uint64_t s2)
             if (v1 == c) {
                 /* Equal.  CC=0, and don't advance the registers.  */
                 env->cc_op = 0;
-                env->retxl = s2;
-                return s1;
+                return int128_make128(s2, s1);
             }
         } else {
             /* Unequal.  CC={1,2}, and advance the registers.  Note that
                the terminator need not be zero, but the string that contains
                the terminator is by definition "low".  */
             env->cc_op = (v1 == c ? 1 : v2 == c ? 2 : v1 < v2 ? 1 : 2);
-            env->retxl = s2 + len;
-            return s1 + len;
+            return int128_make128(s2 + len, s1 + len);
         }
     }
 
     /* CPU-determined bytes equal; advance the registers.  */
     env->cc_op = 3;
-    env->retxl = s2 + len;
-    return s1 + len;
+    return int128_make128(s2 + len, s1 + len);
 }
 
 /* move page */