From nobody Thu May 8 22:58:56 2025 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=1611069555; cv=none; d=zohomail.com; s=zohoarc; b=GKaYy5yHMXH1L2OOPgKrQSTlWM/OuZxarVzBPW4BKIAh8FfmjGO2k8kOcMJhFyBvuq5JcvJWux5AzG2Tw0SJzRrcCzCfKFJhg7doH7GdY/gGs04EvyZZkLp7ktFLuaG7YWYGpHWgpnORTFWpFBkaQGlx269w/WbimCol50OGsxI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1611069555; 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=8ql6fHzFZ6ob/6tSdR41MFRSlYbbsIprY76CgGUbWhQ=; b=RtUjEluLEur3ZWg0zLp5RTqDuSWMf1q3mZcYn3nR7J2rqvcchMJo5wR/jaU8S+Up1mfS/M3wukxqaLy35uOakniadHFVnBKgNwiFYH860Nmvq66li/KdWSW6Q2tlVXC3jZhX/pc6zteOn/r4A6fC77Mn4B5yRzq/reTFosK7KU8= 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=<peter.maydell@linaro.org> (p=none dis=none) header.from=<peter.maydell@linaro.org> Return-Path: <qemu-devel-bounces+importer=patchew.org@nongnu.org> Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 161106955503768.52336702659227; Tue, 19 Jan 2021 07:19:15 -0800 (PST) Received: from localhost ([::1]:42992 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from <qemu-devel-bounces+importer=patchew.org@nongnu.org>) id 1l1smn-0008MS-Pj for importer@patchew.org; Tue, 19 Jan 2021 10:19:13 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:53670) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from <peter.maydell@linaro.org>) id 1l1sfK-0007p6-Ft for qemu-devel@nongnu.org; Tue, 19 Jan 2021 10:11:30 -0500 Received: from mail-wr1-x431.google.com ([2a00:1450:4864:20::431]:39822) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from <peter.maydell@linaro.org>) id 1l1sfG-0001Ik-RH for qemu-devel@nongnu.org; Tue, 19 Jan 2021 10:11:30 -0500 Received: by mail-wr1-x431.google.com with SMTP id c5so20069527wrp.6 for <qemu-devel@nongnu.org>; Tue, 19 Jan 2021 07:11:26 -0800 (PST) Received: from orth.archaic.org.uk (orth.archaic.org.uk. [81.2.115.148]) by smtp.gmail.com with ESMTPSA id a184sm4843699wme.35.2021.01.19.07.11.24 for <qemu-devel@nongnu.org> (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 Jan 2021 07:11:25 -0800 (PST) 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=8ql6fHzFZ6ob/6tSdR41MFRSlYbbsIprY76CgGUbWhQ=; b=PLgKPy0sMj1dQqe960UpOy+TDfSvFOOt8Mov95P3UgKPqmtn5Bu5lrX0xr+wt2AUym UQx0pgcwyN17dLRuEzW2NBK0bRMa5kKvnzd6t5Ei8+BEvWu4j+faxKQh0w4Wnfz+vZw3 EkhX4TzzeKDEiaJvt/ZOY5d1vmYAp7OXKRO/AYGAF/7AIodW0hyu6e2rnacLwgQ2ZAZU E2rVU+nVgjDMuBGIasv6IH4w2W4vp6tM9Oaj7TxTMX1ADbevzeIawSiR1uhiYKxOc1Wk BNem61Mx95tuKOznY+0apoClXeVJgix6RmaMEyM38RjsYOM2IkPCAMyifpE5CKFpaHPo R+ew== 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=8ql6fHzFZ6ob/6tSdR41MFRSlYbbsIprY76CgGUbWhQ=; b=PaJo8d2m+5VA8dON5xK377z7QuV5Ylb5G1oQgOwcuWjMUPHvxtQHCtDsTQPUnmKpoV +CFKdViYokDebqjWydSyzxx6du5Asfo8bwGbRAVVMt7BgLw4dyWEx/O8t/3MXegXTnHh 7yVBl83LUgtX7F1XGbqfbbTelhtO22o+8G4/x50xtXXq3jFP3a/KHZ9JeqPQ6qYWjHxm sNt4peT7vrvzQWip4ellrG1DGlqcsKLFwyv7OSldoSlaRa3h/HwrVrv/8rf3w82x8Sp2 nQWRO3kiaAU/AuvUfs4QPVmpJebypcvIAL7Muntxy68byGJeRLFeKtVIn6bMzg+FO21m 7fUA== X-Gm-Message-State: AOAM531QYVYYnGwLNJOv58JAxfWUVFNHPJp37TRbWMxmomnu9SQ67pHt JSvwCvygFVQjcWL4a49FfP2Di+z18Ogzng== X-Google-Smtp-Source: ABdhPJxCxhHyDu6p6XpDcY4lBo8c+eSdsCeDU6tAr8XNrp0foZHUWBSruL6ObmzECwIhOswhaVZSQA== X-Received: by 2002:a5d:5005:: with SMTP id e5mr4714219wrt.279.1611069085480; Tue, 19 Jan 2021 07:11:25 -0800 (PST) From: Peter Maydell <peter.maydell@linaro.org> To: qemu-devel@nongnu.org Subject: [PULL 23/33] target/arm: Introduce PREDDESC field definitions Date: Tue, 19 Jan 2021 15:10:54 +0000 Message-Id: <20210119151104.16264-24-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210119151104.16264-1-peter.maydell@linaro.org> References: <20210119151104.16264-1-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::431; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x431.google.com 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: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+importer=patchew.org@nongnu.org> X-ZohoMail-DKIM: pass (identity @linaro.org) Content-Type: text/plain; charset="utf-8" From: Richard Henderson <richard.henderson@linaro.org> SVE predicate operations cannot use the "usual" simd_desc encoding, because the lengths are not a multiple of 8. But we were abusing the SIMD_* fields to store values anyway. This abuse broke when SIMD_OPRSZ_BITS was modified in e2e7168a214. Introduce a new set of field definitions for exclusive use of predicates, so that it is obvious what kind of predicate we are manipulating. To be used in future patches. Cc: qemu-stable@nongnu.org Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210113062650.593824-2-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> --- target/arm/internals.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/target/arm/internals.h b/target/arm/internals.h index 27cc93f15ac..853fa88fd61 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1348,6 +1348,15 @@ void arm_log_exception(int idx); #define LOG2_TAG_GRANULE 4 #define TAG_GRANULE (1 << LOG2_TAG_GRANULE) =20 +/* + * SVE predicates are 1/8 the size of SVE vectors, and cannot use + * the same simd_desc() encoding due to restrictions on size. + * Use these instead. + */ +FIELD(PREDDESC, OPRSZ, 0, 6) +FIELD(PREDDESC, ESZ, 6, 2) +FIELD(PREDDESC, DATA, 8, 24) + /* * The SVE simd_data field, for memory ops, contains either * rd (5 bits) or a shift count (2 bits). --=20 2.20.1