From nobody Mon Feb 9 18:40:31 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 164746429284837.436791473625476; Wed, 16 Mar 2022 13:58:12 -0700 (PDT) Received: from localhost ([::1]:35378 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nUaih-0005Zd-95 for importer@patchew.org; Wed, 16 Mar 2022 16:58:11 -0400 Received: from eggs.gnu.org ([209.51.188.92]:58592) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nUa9U-0001jV-EJ; Wed, 16 Mar 2022 16:21:48 -0400 Received: from [187.72.171.209] (port=47541 helo=outlook.eldorado.org.br) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nUa9S-0006KE-7j; Wed, 16 Mar 2022 16:21:47 -0400 Received: from p9ibm ([10.10.71.235]) by outlook.eldorado.org.br over TLS secured channel with Microsoft SMTPSVC(8.5.9600.16384); Wed, 16 Mar 2022 17:04:30 -0300 Received: from eldorado.org.br (unknown [10.10.70.45]) by p9ibm (Postfix) with ESMTP id 3EBB580012C; Wed, 16 Mar 2022 17:04:30 -0300 (-03) From: Lucas Coutinho To: qemu-devel@nongnu.org, qemu-ppc@nongnu.org Subject: [PATCH] target/ppc: Replicate Double->Single-Precision result Date: Wed, 16 Mar 2022 17:04:27 -0300 Message-Id: <20220316200427.3410437-1-lucas.coutinho@eldorado.org.br> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-OriginalArrivalTime: 16 Mar 2022 20:04:30.0648 (UTC) FILETIME=[0C377B80:01D83971] X-Host-Lookup-Failed: Reverse DNS lookup failed for 187.72.171.209 (failed) Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=187.72.171.209; envelope-from=lucas.coutinho@eldorado.org.br; helo=outlook.eldorado.org.br X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.659, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Wed, 16 Mar 2022 16:56:04 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: danielhb413@gmail.com, richard.henderson@linaro.org, groug@kaod.org, clg@kaod.org, matheus.ferst@eldorado.org.br, Lucas Coutinho , david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZM-MESSAGEID: 1647464294602100001 Content-Type: text/plain; charset="utf-8" Power ISA v3.1 formalizes the previously undefined result in words 1 and 3 to be a copy of the result in words 0 and 2. This affects: xvcvsxdsp, xvcvuxdsp, xvcvdpsp. And the previously undefined result in word 1 to be a copy of the result in word 0. This affects: xscvdpsp. Signed-off-by: Lucas Coutinho Reviewed-by: Richard Henderson --- This patch is a follow-up of:=20 https://lists.gnu.org/archive/html/qemu-ppc/2022-03/msg00354.html which have the same behavior of the instructions altered --- target/ppc/fpu_helper.c | 48 +++++++++++++++++++++++++++++++++++++---- 1 file changed, 44 insertions(+), 4 deletions(-) diff --git a/target/ppc/fpu_helper.c b/target/ppc/fpu_helper.c index e76d2ae83a..e9cf5f7a78 100644 --- a/target/ppc/fpu_helper.c +++ b/target/ppc/fpu_helper.c @@ -2691,11 +2691,35 @@ void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, p= pc_vsr_t *xb) \ do_float_check_status(env, GETPC()); \ } =20 -VSX_CVT_FP_TO_FP(xscvdpsp, 1, float64, float32, VsrD(0), VsrW(0), 1) VSX_CVT_FP_TO_FP(xscvspdp, 1, float32, float64, VsrW(0), VsrD(0), 1) -VSX_CVT_FP_TO_FP(xvcvdpsp, 2, float64, float32, VsrD(i), VsrW(2 * i), 0) VSX_CVT_FP_TO_FP(xvcvspdp, 2, float32, float64, VsrW(2 * i), VsrD(i), 0) =20 +#define VSX_CVT_FP_TO_FP2(op, nels, stp, ttp, sfprf) \ +void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \ +{ \ + ppc_vsr_t t =3D { }; \ + int i; \ + \ + for (i =3D 0; i < nels; i++) { \ + t.VsrW(2 * i) =3D stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \ + if (unlikely(stp##_is_signaling_nan(xb->VsrD(i), \ + &env->fp_status))) { \ + float_invalid_op_vxsnan(env, GETPC()); \ + t.VsrW(2 * i) =3D ttp##_snan_to_qnan(t.VsrW(2 * i)); \ + } \ + if (sfprf) { \ + helper_compute_fprf_##ttp(env, t.VsrW(2 * i)); \ + } \ + t.VsrW(2 * i + 1) =3D t.VsrW(2 * i); \ + } \ + \ + *xt =3D t; \ + do_float_check_status(env, GETPC()); \ +} + +VSX_CVT_FP_TO_FP2(xvcvdpsp, 2, float64, float32, 0) +VSX_CVT_FP_TO_FP2(xscvdpsp, 1, float64, float32, 1) + /* * VSX_CVT_FP_TO_FP_VECTOR - VSX floating point/floating point conversion * op - instruction mnemonic @@ -3011,11 +3035,27 @@ VSX_CVT_INT_TO_FP(xvcvsxddp, 2, int64, float64, Vsr= D(i), VsrD(i), 0, 0) VSX_CVT_INT_TO_FP(xvcvuxddp, 2, uint64, float64, VsrD(i), VsrD(i), 0, 0) VSX_CVT_INT_TO_FP(xvcvsxwdp, 2, int32, float64, VsrW(2 * i), VsrD(i), 0, 0) VSX_CVT_INT_TO_FP(xvcvuxwdp, 2, uint64, float64, VsrW(2 * i), VsrD(i), 0, = 0) -VSX_CVT_INT_TO_FP(xvcvsxdsp, 2, int64, float32, VsrD(i), VsrW(2 * i), 0, 0) -VSX_CVT_INT_TO_FP(xvcvuxdsp, 2, uint64, float32, VsrD(i), VsrW(2 * i), 0, = 0) VSX_CVT_INT_TO_FP(xvcvsxwsp, 4, int32, float32, VsrW(i), VsrW(i), 0, 0) VSX_CVT_INT_TO_FP(xvcvuxwsp, 4, uint32, float32, VsrW(i), VsrW(i), 0, 0) =20 +#define VSX_CVT_INT_TO_FP2(op, stp, ttp) \ +void helper_##op(CPUPPCState *env, ppc_vsr_t *xt, ppc_vsr_t *xb) \ +{ \ + ppc_vsr_t t =3D { }; \ + int i; \ + \ + for (i =3D 0; i < 2; i++) { \ + t.VsrW(2 * i) =3D stp##_to_##ttp(xb->VsrD(i), &env->fp_status); \ + t.VsrW(2 * i + 1) =3D t.VsrW(2 * i); \ + } \ + \ + *xt =3D t; \ + do_float_check_status(env, GETPC()); \ +} + +VSX_CVT_INT_TO_FP2(xvcvsxdsp, int64, float32) +VSX_CVT_INT_TO_FP2(xvcvuxdsp, uint64, float32) + /* * VSX_CVT_INT_TO_FP_VECTOR - VSX integer to floating point conversion * op - instruction mnemonic --=20 2.25.1