From nobody Mon Feb 9 23:04:09 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; 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; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1598279791; cv=none; d=zohomail.com; s=zohoarc; b=DE2gw/aoxAjCEKLuLu6ZIJdb0VurM3mfLEIOAcb/l6mTcPu5Di/RLtCsly81ibmg7cMfkYot/OwFByYEqLhSHh8zjZ42DU+IaKZTln+lEB2JwR+jrv2tHAupOExSRXOYJ+XNOlcqQNk2DQP9YeS5RZKNXBu2IBVSaAQ16v+W478= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1598279791; h=Content-Transfer-Encoding:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=ce2QQC2ppT3SMcRQlGiiQG1I5q4nxsH3FebcSzE9SxM=; b=R9WhUwv6eaGNTv1B2BDrwaer84YaoTMMWy7nLxuxyQKG7x15Sbyiw1hEDW5CS43vqafr0/H1cdsisNavG/leO1hs3Ii+2G2MNdtwjnU+4pGp99dapFyAnu5tyzGipNXpNaWkcnvTCgMNb/5RBdH3m+bDjhgfWw+rLNx9BcK0s+o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; 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; dmarc=pass header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1598279791477412.47551207197205; Mon, 24 Aug 2020 07:36:31 -0700 (PDT) Received: from localhost ([::1]:36146 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kADaI-0001nk-6k for importer@patchew.org; Mon, 24 Aug 2020 10:36:30 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43408) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kADTw-0000CO-VE for qemu-devel@nongnu.org; Mon, 24 Aug 2020 10:29:56 -0400 Received: from mail-wm1-x329.google.com ([2a00:1450:4864:20::329]:35324) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1kADTv-0002ju-05 for qemu-devel@nongnu.org; Mon, 24 Aug 2020 10:29:56 -0400 Received: by mail-wm1-x329.google.com with SMTP id o21so8351989wmc.0 for ; Mon, 24 Aug 2020 07:29:54 -0700 (PDT) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id b14sm24499091wrj.93.2020.08.24.07.29.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Aug 2020 07:29:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=ce2QQC2ppT3SMcRQlGiiQG1I5q4nxsH3FebcSzE9SxM=; b=jzrJJMKeV9rO9gCMtjRg1gFti1fyouonVH+OzkdXJRkqtJLPAbj4G1Vg/1Alk1w9Z4 z93xo9A9EHhZxAEdprksiOnJMKO3MvLmbUQ+hK/wUt07/Pr9B9WB8ZxxUSMJfCK6y4cA AIka2LZAsZ7//mZqov3w7MpvL/QeZZgpTFRCi72qAFNCnY1HBnZvdhWiejAVGP3bvoE+ PkywxYoJrZqDtYPc3JQLNgfkWPxaxaZ/2F9DBtzCtXdDYdHupqoWl28mrk+8fkMQOeFS FNbB9IBEe2pvX37DZaab7wIH90ZMNe5fzcgUZkNWjSDOmRfoUicBYq+IJDdXddZTMZmR j4Eg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=ce2QQC2ppT3SMcRQlGiiQG1I5q4nxsH3FebcSzE9SxM=; b=MMwQZt4glttHBFq7Woq0QZGxVwOHxnsQh80Kdx/u8BC0/ucYkyN+fSby/IaF3c/St9 wHqCEzVG0GW/Cod2N7++ErmHV49oNLu6LAy2iCgYBIoMSAKF4e0AhZ3YOYysLq3q00+L ea51PijP7AZOre5oKpTsOnt2JU6HpE36qz3qUDUmY9JV121XjIvigCBk4w6aQ4rZtGWq 1e87jiYIaVHOkuCKyFDDnW5zA9w14Tj0yijKQk1TKJ6e405E7UMEKY+L7O15d6WyAEx7 V1LOmn3h4CyW++l3p6EEXgq5e2061aA1BhfHnomfjL5ED+BsLGbZmTHMVDXjErQh6hrU UFQw== X-Gm-Message-State: AOAM530RAoWb5rxc9AJeHnz0yXDsRZYAfuTsXnzLV/NbIxZyfjRSJgKo YTM3iKCWONwqziAzYfIHMadvhQ== X-Google-Smtp-Source: ABdhPJwBxsivKpz1FXM47jPti+XSJVcrqRiFG7uJkI2VtDFIUpQPCiGqp40r1NqeyGhyDyEaA7QA8g== X-Received: by 2002:a05:600c:2048:: with SMTP id p8mr6272146wmg.105.1598279393666; Mon, 24 Aug 2020 07:29:53 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Subject: [PATCH 16/22] target/arm: Implement VFP vp16 VCVT-with-specified-rounding-mode Date: Mon, 24 Aug 2020 15:29:28 +0100 Message-Id: <20200824142934.20850-17-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200824142934.20850-1-peter.maydell@linaro.org> References: <20200824142934.20850-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable 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=2a00:1450:4864:20::329; envelope-from=peter.maydell@linaro.org; helo=mail-wm1-x329.google.com X-detected-operating-system: by eggs.gnu.org: No matching host in p0f cache. That's all we know. X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" Implement the fp16 versions of the VFP VCVT instruction forms which convert between floating point and integer with a specified rounding mode. Signed-off-by: Peter Maydell Reviewed-by: Richard Henderson --- target/arm/vfp-uncond.decode | 6 ++++-- target/arm/translate-vfp.c.inc | 32 ++++++++++++++++++++++++-------- 2 files changed, 28 insertions(+), 10 deletions(-) diff --git a/target/arm/vfp-uncond.decode b/target/arm/vfp-uncond.decode index ee700e51972..b7cd9d11ed5 100644 --- a/target/arm/vfp-uncond.decode +++ b/target/arm/vfp-uncond.decode @@ -64,7 +64,9 @@ VRINT 1111 1110 1.11 10 rm:2 .... 1011 01.0 .... \ vm=3D%vm_dp vd=3D%vd_dp dp=3D1 =20 # VCVT float to int with specified rounding mode; Vd is always single-prec= ision +VCVT 1111 1110 1.11 11 rm:2 .... 1001 op:1 1.0 .... \ + vm=3D%vm_sp vd=3D%vd_sp sz=3D1 VCVT 1111 1110 1.11 11 rm:2 .... 1010 op:1 1.0 .... \ - vm=3D%vm_sp vd=3D%vd_sp dp=3D0 + vm=3D%vm_sp vd=3D%vd_sp sz=3D2 VCVT 1111 1110 1.11 11 rm:2 .... 1011 op:1 1.0 .... \ - vm=3D%vm_dp vd=3D%vd_sp dp=3D1 + vm=3D%vm_dp vd=3D%vd_sp sz=3D3 diff --git a/target/arm/translate-vfp.c.inc b/target/arm/translate-vfp.c.inc index fdf486b7c15..583e7ccdb20 100644 --- a/target/arm/translate-vfp.c.inc +++ b/target/arm/translate-vfp.c.inc @@ -396,7 +396,7 @@ static bool trans_VRINT(DisasContext *s, arg_VRINT *a) static bool trans_VCVT(DisasContext *s, arg_VCVT *a) { uint32_t rd, rm; - bool dp =3D a->dp; + int sz =3D a->sz; TCGv_ptr fpst; TCGv_i32 tcg_rmode, tcg_shift; int rounding =3D fp_decode_rm[a->rm]; @@ -406,12 +406,16 @@ static bool trans_VCVT(DisasContext *s, arg_VCVT *a) return false; } =20 - if (dp && !dc_isar_feature(aa32_fpdp_v2, s)) { + if (sz =3D=3D 3 && !dc_isar_feature(aa32_fpdp_v2, s)) { + return false; + } + + if (sz =3D=3D 1 && !dc_isar_feature(aa32_fp16_arith, s)) { return false; } =20 /* UNDEF accesses to D16-D31 if they don't exist */ - if (dp && !dc_isar_feature(aa32_simd_r32, s) && (a->vm & 0x10)) { + if (sz =3D=3D 3 && !dc_isar_feature(aa32_simd_r32, s) && (a->vm & 0x10= )) { return false; } =20 @@ -422,14 +426,18 @@ static bool trans_VCVT(DisasContext *s, arg_VCVT *a) return true; } =20 - fpst =3D fpstatus_ptr(FPST_FPCR); + if (sz =3D=3D 1) { + fpst =3D fpstatus_ptr(FPST_FPCR_F16); + } else { + fpst =3D fpstatus_ptr(FPST_FPCR); + } =20 tcg_shift =3D tcg_const_i32(0); =20 tcg_rmode =3D tcg_const_i32(arm_rmode_to_sf(rounding)); gen_helper_set_rmode(tcg_rmode, tcg_rmode, fpst); =20 - if (dp) { + if (sz =3D=3D 3) { TCGv_i64 tcg_double, tcg_res; TCGv_i32 tcg_tmp; tcg_double =3D tcg_temp_new_i64(); @@ -451,10 +459,18 @@ static bool trans_VCVT(DisasContext *s, arg_VCVT *a) tcg_single =3D tcg_temp_new_i32(); tcg_res =3D tcg_temp_new_i32(); neon_load_reg32(tcg_single, rm); - if (is_signed) { - gen_helper_vfp_tosls(tcg_res, tcg_single, tcg_shift, fpst); + if (sz =3D=3D 1) { + if (is_signed) { + gen_helper_vfp_toslh(tcg_res, tcg_single, tcg_shift, fpst); + } else { + gen_helper_vfp_toulh(tcg_res, tcg_single, tcg_shift, fpst); + } } else { - gen_helper_vfp_touls(tcg_res, tcg_single, tcg_shift, fpst); + if (is_signed) { + gen_helper_vfp_tosls(tcg_res, tcg_single, tcg_shift, fpst); + } else { + gen_helper_vfp_touls(tcg_res, tcg_single, tcg_shift, fpst); + } } neon_store_reg32(tcg_res, rd); tcg_temp_free_i32(tcg_res); --=20 2.20.1