[v1,02/15] s390x/tcg: Fix rounding from float128 to uint64_t/uin32_t

Message ID 20190212110308.13707-4-david@redhat.com
State New
Headers show
Series
  • [v1] s390x: Add floating-point extension facility to "qemu" cpu model
Related show

Commit Message

David Hildenbrand Feb. 12, 2019, 11:02 a.m.
Let's use the proepr conversion functions now that we have them.

Signed-off-by: David Hildenbrand <david@redhat.com>
---
 target/s390x/fpu_helper.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

Comments

Richard Henderson Feb. 12, 2019, 6:03 p.m. | #1
On 2/12/19 3:02 AM, David Hildenbrand wrote:
> Let's use the proepr conversion functions now that we have them.

"proper"

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~

Patch

diff --git a/target/s390x/fpu_helper.c b/target/s390x/fpu_helper.c
index a3214bd546..f9ec519067 100644
--- a/target/s390x/fpu_helper.c
+++ b/target/s390x/fpu_helper.c
@@ -509,9 +509,7 @@  uint64_t HELPER(clgdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
 uint64_t HELPER(clgxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
 {
     int hold = swap_round_mode(env, m3);
-    float128 v2 = make_float128(h, l);
-    /* ??? Not 100% correct.  */
-    uint64_t ret = float128_to_int64(v2, &env->fpu_status);
+    uint64_t ret = float128_to_uint64(make_float128(h, l), &env->fpu_status);
     set_float_rounding_mode(hold, &env->fpu_status);
     handle_exceptions(env, GETPC());
     return ret;
@@ -541,9 +539,7 @@  uint64_t HELPER(clfdb)(CPUS390XState *env, uint64_t v2, uint32_t m3)
 uint64_t HELPER(clfxb)(CPUS390XState *env, uint64_t h, uint64_t l, uint32_t m3)
 {
     int hold = swap_round_mode(env, m3);
-    float128 v2 = make_float128(h, l);
-    /* Not 100% correct.  */
-    uint32_t ret = float128_to_int64(v2, &env->fpu_status);
+    uint32_t ret = float128_to_uint32(make_float128(h, l), &env->fpu_status);
     set_float_rounding_mode(hold, &env->fpu_status);
     handle_exceptions(env, GETPC());
     return ret;