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[97.126.123.70]) by smtp.gmail.com with ESMTPSA id o6sm13897097pgg.37.2020.02.24.14.22.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Feb 2020 14:22:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=LpDXkMJymCkBigdAeSGEBRetKSjrJSWM6nnEjxNkcOs=; b=qLd16HzsDhSXKCYXkXTlKuDt3c3IGFTybZKTVNQZ0oLUH6Q+wFmc3ojgqTmTBF+lga reJBMEOc3d0HGrcJWT+5pwn2YuKZCj7XZZFktyRYUhs1t4j4rUnLOdTd279+hI3k80bV 7RThRAywKqCbT/aTKrIhDoNm2C6MZf+TOEC3UhL1Ol0t3Vm3pWHsjiEbXyRmCZ2ra/Pa 2G6G2HWCRPzSaPEW79O9mQAyX6IG9oQ5EQKhoYUlE1K4dTiQ3dSsZxZT9esq71c5YkvW r+wS9B8Givx3o6jzFYJt8CABwk4oq0ENTfg9MiHRnkRh0xNyLIWCYVvIcODDOxRQPdyO GFhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=LpDXkMJymCkBigdAeSGEBRetKSjrJSWM6nnEjxNkcOs=; b=HCeAlyaA3NXMvIwIalmKDYQK7jzQxcG0/AfGqydIWq6mrlK4EfF0DWNMHOiPapTLct 4cZnSOlxPyFjSibiqbIiyMxw4VO7DHnCxmtuvzP7TlVE3UZkrval56VPVGcTx3M5xjAi 1V+2HsGgOvm6UA84gUqJjWK/snSY1F7PpSYkucaw1ARnSkSe0a/5taL7XxTzV1LcfetF r2YAXwjyAjlZTMQD0nUbbP/0XoJ9DtFJ76JgYw8N9DzDyakck8ks7Fw8z5CKkIylLsHn vY5t1NqffO8wnAufKzAIbk5D80VT/cADrkRjNXNueKWI/JHzVEzMEevdYd+7EzYMoHWj l2/Q== X-Gm-Message-State: APjAAAXrF8sJuT2co9hAjS9tCeW9ITARIK5z/sm3CqIBaEPatYL+yoUy iNNxDmvRwuFQzRyZqYkUsgVNgPzJoKM= X-Google-Smtp-Source: APXvYqxUqTghpaDeKoQr9pJhTaH+ZpirDQn9KSLY7+11maLTmtJwJ7cVBJL4eLRqPA3iOo1dWn+RpQ== X-Received: by 2002:a63:2842:: with SMTP id o63mr56554627pgo.317.1582582960842; Mon, 24 Feb 2020 14:22:40 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 05/17] target/arm: Improve ID_AA64PFR0 FP/SIMD validation Date: Mon, 24 Feb 2020 14:22:20 -0800 Message-Id: <20200224222232.13807-6-richard.henderson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200224222232.13807-1-richard.henderson@linaro.org> References: <20200224222232.13807-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::444 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: peter.maydell@linaro.org, qemu-arm@nongnu.org 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" When sanity checking id_aa64pfr0, use the raw FP and SIMD fields, because the values must match. Delay the test until we've finished modifying the id_aa64pfr0 register. Signed-off-by: Richard Henderson --- target/arm/cpu.c | 23 ++++++++++++----------- 1 file changed, 12 insertions(+), 11 deletions(-) diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 5be4c25809..f10f34b655 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -1427,17 +1427,6 @@ static void arm_cpu_realizefn(DeviceState *dev, Erro= r **errp) return; } =20 - if (arm_feature(env, ARM_FEATURE_AARCH64) && - cpu->has_vfp !=3D cpu->has_neon) { - /* - * This is an architectural requirement for AArch64; AArch32 is - * more flexible and permits VFP-no-Neon and Neon-no-VFP. - */ - error_setg(errp, - "AArch64 CPUs must have both VFP and Neon or neither"); - return; - } - if (!cpu->has_vfp) { uint64_t t; uint32_t u; @@ -1537,6 +1526,18 @@ static void arm_cpu_realizefn(DeviceState *dev, Erro= r **errp) cpu->isar.mvfr0 =3D u; } =20 + if (arm_feature(env, ARM_FEATURE_AARCH64) && + FIELD_EX64(cpu->isar.id_aa64pfr0, ID_AA64PFR0, FP) !=3D + FIELD_EX64(cpu->isar.id_aa64pfr0, ID_AA64PFR0, ADVSIMD)) { + /* + * This is an architectural requirement for AArch64. Not only + * both vfp and advsimd or neither, but further both must + * support fp16 or neither. + */ + error_setg(errp, "AArch64 CPUs must match VFP and NEON"); + return; + } + if (arm_feature(env, ARM_FEATURE_M) && !cpu->has_dsp) { uint32_t u; =20 --=20 2.20.1