target-s390x: silence NaNs for LOAD LENGTHENED and LOAD ROUNDED

LOAD LENGTHENED and LOAD ROUNDED are considered as FP operations and
thus need to convert input sNaN into corresponding qNaN.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Alexander Graf <agraf@suse.de>

diff --git a/target-s390x/fpu_helper.c b/target-s390x/fpu_helper.c
index b946ec1d5143c4e198b74f41c5e1644c7d2ffba1..96eabb6fc283945aa93c1b3456c2211fc82fb158 100644 (file)
--- a/target-s390x/fpu_helper.c
+++ b/target-s390x/fpu_helper.c
@@ -265,7 +265,7 @@ uint64_t HELPER(ldeb)(CPUS390XState *env, uint64_t f2)
 {
     float64 ret = float32_to_float64(f2, &env->fpu_status);
     handle_exceptions(env, GETPC());
-    return ret;
+    return float64_maybe_silence_nan(ret);
 }
 
 /* convert 128-bit float to 64-bit float */
@@ -273,7 +273,7 @@ uint64_t HELPER(ldxb)(CPUS390XState *env, uint64_t ah, uint64_t al)
 {
     float64 ret = float128_to_float64(make_float128(ah, al), &env->fpu_status);
     handle_exceptions(env, GETPC());
-    return ret;
+    return float64_maybe_silence_nan(ret);
 }
 
 /* convert 64-bit float to 128-bit float */
@@ -281,7 +281,7 @@ uint64_t HELPER(lxdb)(CPUS390XState *env, uint64_t f2)
 {
     float128 ret = float64_to_float128(f2, &env->fpu_status);
     handle_exceptions(env, GETPC());
-    return RET128(ret);
+    return RET128(float128_maybe_silence_nan(ret));
 }
 
 /* convert 32-bit float to 128-bit float */
@@ -289,7 +289,7 @@ uint64_t HELPER(lxeb)(CPUS390XState *env, uint64_t f2)
 {
     float128 ret = float32_to_float128(f2, &env->fpu_status);
     handle_exceptions(env, GETPC());
-    return RET128(ret);
+    return RET128(float128_maybe_silence_nan(ret));
 }
 
 /* convert 64-bit float to 32-bit float */
@@ -297,7 +297,7 @@ uint64_t HELPER(ledb)(CPUS390XState *env, uint64_t f2)
 {
     float32 ret = float64_to_float32(f2, &env->fpu_status);
     handle_exceptions(env, GETPC());
-    return ret;
+    return float32_maybe_silence_nan(ret);
 }
 
 /* convert 128-bit float to 32-bit float */
@@ -305,7 +305,7 @@ uint64_t HELPER(lexb)(CPUS390XState *env, uint64_t ah, uint64_t al)
 {
     float32 ret = float128_to_float32(make_float128(ah, al), &env->fpu_status);
     handle_exceptions(env, GETPC());
-    return ret;
+    return float32_maybe_silence_nan(ret);
 }
 
 /* 32-bit FP compare */