From patchwork Wed Sep 30 14:55:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 304017 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1621FC4727C for ; Wed, 30 Sep 2020 15:01:59 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 70A56206FC for ; Wed, 30 Sep 2020 15:01:58 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Wed, 30 Sep 2020 14:55:58 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-220.ams2.redhat.com [10.36.113.220]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8890A5C1C4; Wed, 30 Sep 2020 14:55:56 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Subject: [PATCH v1 12/20] s390x/tcg: Implement 128 bit for VECTOR FP LOAD ROUNDED Date: Wed, 30 Sep 2020 16:55:15 +0200 Message-Id: <20200930145523.71087-13-david@redhat.com> In-Reply-To: <20200930145523.71087-1-david@redhat.com> References: <20200930145523.71087-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=david@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=david@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/30 00:26:33 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -25 X-Spam_score: -2.6 X-Spam_bar: -- X-Spam_report: (-2.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.469, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-s390x@nongnu.org, Cornelia Huck , Richard Henderson , Thomas Huth , David Hildenbrand Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 128 bit -> 64 bit, there is only a single element to process. Signed-off-by: David Hildenbrand Reviewed-by: Richard Henderson --- target/s390x/helper.h | 1 + target/s390x/translate_vx.c.inc | 11 ++++++++++- target/s390x/vec_fpu_helper.c | 19 +++++++++++++++++++ 3 files changed, 30 insertions(+), 1 deletion(-) diff --git a/target/s390x/helper.h b/target/s390x/helper.h index e643672ec4..79e3fa14f8 100644 --- a/target/s390x/helper.h +++ b/target/s390x/helper.h @@ -311,6 +311,7 @@ DEF_HELPER_FLAGS_4(gvec_vfll32s, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vfll64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vflr64, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_4(gvec_vflr64s, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) +DEF_HELPER_FLAGS_4(gvec_vflr128, TCG_CALL_NO_WG, void, ptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm32, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm32s, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) DEF_HELPER_FLAGS_5(gvec_vfm64, TCG_CALL_NO_WG, void, ptr, cptr, cptr, env, i32) diff --git a/target/s390x/translate_vx.c.inc b/target/s390x/translate_vx.c.inc index ff697f3470..0b21e8789f 100644 --- a/target/s390x/translate_vx.c.inc +++ b/target/s390x/translate_vx.c.inc @@ -2785,8 +2785,17 @@ static DisasJumpType op_vcdg(DisasContext *s, DisasOps *o) } break; case 0xc5: - if (fpf == FPF_LONG) { + switch (fpf) { + case FPF_LONG: fn = se ? gen_helper_gvec_vflr64s : gen_helper_gvec_vflr64; + break; + case FPF_EXT: + if (s390_has_feat(S390_FEAT_VECTOR_ENH)) { + fn = gen_helper_gvec_vflr128; + } + break; + default: + break; } break; default: diff --git a/target/s390x/vec_fpu_helper.c b/target/s390x/vec_fpu_helper.c index 5ded2ccbcd..f8ebd04516 100644 --- a/target/s390x/vec_fpu_helper.c +++ b/target/s390x/vec_fpu_helper.c @@ -658,6 +658,25 @@ void HELPER(gvec_vflr64s)(void *v1, const void *v2, CPUS390XState *env, vflr64(v1, v2, env, true, XxC, erm, GETPC()); } +void HELPER(gvec_vflr128)(void *v1, const void *v2, CPUS390XState *env, + uint32_t desc) +{ + const uint8_t erm = extract32(simd_data(desc), 4, 4); + const bool XxC = extract32(simd_data(desc), 2, 1); + uint8_t vxc, vec_exc = 0; + int old_mode; + float64 ret; + + old_mode = s390_swap_bfp_rounding_mode(env, erm); + ret = float128_to_float64(s390_vec_read_float128(v2, 0), &env->fpu_status); + vxc = check_ieee_exc(env, 0, XxC, &vec_exc); + s390_restore_bfp_rounding_mode(env, old_mode); + handle_ieee_exc(env, vxc, vec_exc, GETPC()); + + /* place at even element, odd element is unpredictable */ + s390_vec_write_float64(v1, 0, ret); +} + #define DEF_GVEC_FVM(BITS) \ void HELPER(gvec_vfm##BITS)(void *v1, const void *v2, const void *v3, \ CPUS390XState *env, uint32_t desc) \