From: David Hildenbrand <david@redhat.com>
To: qemu-devel@nongnu.org
Cc: qemu-s390x@nongnu.org, Thomas Huth <thuth@redhat.com>,
Halil Pasic <pasic@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Janosch Frank <frankja@linux.ibm.com>,
Cornelia Huck <cohuck@redhat.com>,
Richard Henderson <rth@twiddle.net>,
David Hildenbrand <david@redhat.com>
Subject: [Qemu-devel] [PATCH v3 02/15] s390x/tcg: Fix rounding from float128 to uint64_t/uin32_t
Date: Mon, 18 Feb 2019 13:26:57 +0100 [thread overview]
Message-ID: <20190218122710.23639-3-david@redhat.com> (raw)
In-Reply-To: <20190218122710.23639-1-david@redhat.com>
Let's use the proper conversion functions now that we have them.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
---
target/s390x/fpu_helper.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/target/s390x/fpu_helper.c b/target/s390x/fpu_helper.c
index 0e9247bf7e..21236caed8 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;
--
2.17.2
next prev parent reply other threads:[~2019-02-18 12:27 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-02-18 12:26 [Qemu-devel] [PATCH v3 00/15] s390x/tcg: Implement floating-point extension facility David Hildenbrand
2019-02-18 12:26 ` [Qemu-devel] [PATCH v3 01/15] s390x/tcg: Fix TEST DATA CLASS instructions David Hildenbrand
2019-02-26 14:52 ` David Hildenbrand
2019-02-18 12:26 ` David Hildenbrand [this message]
2019-02-18 12:26 ` [Qemu-devel] [PATCH v3 03/15] s390x/tcg: Factor out conversion of softfloat exceptions David Hildenbrand
2019-02-18 12:26 ` [Qemu-devel] [PATCH v3 04/15] s390x/tcg: Fix parts of IEEE exception handling David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 05/15] s390x/tcg: Hide IEEE underflows in some scenarios David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 06/15] s390x/tcg: Refactor SET FPC AND SIGNAL handling David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 07/15] s390x/tcg: Fix simulated-IEEE exceptions David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 08/15] s390x/tcg: Handle SET FPC AND LOAD FPC 3-bit BFP rounding modes David Hildenbrand
2019-02-26 14:54 ` David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 09/15] s390x/tcg: Check for exceptions in SET BFP ROUNDING MODE David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 10/15] s390x/tcg: Refactor saving/restoring the bfp rounding mode David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 11/15] s390x/tcg: Prepare for IEEE-inexact-exception control (XxC) David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 12/15] s390x/tcg: Implement XxC and checks for most FP instructions David Hildenbrand
2019-02-26 14:55 ` David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 13/15] s390x/tcg: Implement rounding mode and XxC for LOAD ROUNDED David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 14/15] s390x/tcg: Handle all rounding modes overwritten by BFP instructions David Hildenbrand
2019-02-18 12:27 ` [Qemu-devel] [PATCH v3 15/15] s390x: Add floating-point extension facility to "qemu" cpu model David Hildenbrand
2019-02-26 15:10 ` [Qemu-devel] [qemu-s390x] " Thomas Huth
2019-02-26 14:44 ` [Qemu-devel] [PATCH v3 00/15] s390x/tcg: Implement floating-point extension facility Cornelia Huck
2019-02-26 14:56 ` David Hildenbrand
2019-02-26 15:09 ` Cornelia Huck
2019-02-28 14:28 ` Cornelia Huck
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