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[114.34.229.221]) by smtp.gmail.com with ESMTPSA id f18sm6567309pgv.84.2020.08.06.03.47.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Aug 2020 03:47:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=Be0XpRst97t7RY4cXW3Qtzy3ziEgiOCF9bgG3gg0AY8=; b=Y20454jTIM3t7f+NPhPV+bD7LNvtnvYwiJlU/PCpzDrmgavozlhtpqGlGlI4evY688 P5b35nYivlj832hLmFTYNQZJySxIc4tey5m2aR8aYRjDRsLGRbELAYlNo/gUv1Wwe7Vt kJeBP4SAe3hiJiQpCIGiujsqldNyifL46J0k6vloXrPkR8p3jb+AXzWIgfjmET8YO5ZQ eh7BaBd25lce8QHbKCkXrUgRfNYxrvGeG6Gy/mk/LU+8RPB31AANBGQafJgOxUeoPBCU YW5bHs6B7hTWTwKmcSOf6J9I9DBh+QvB5+1XuUfn8vHl0pcTQCbX8bidpra1lnUKElwT TF1g== 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; bh=Be0XpRst97t7RY4cXW3Qtzy3ziEgiOCF9bgG3gg0AY8=; b=MorGhRoKzFzeYo8cKT9fJLl7xSX/h55EPKft2o4aRQLROj1IVbfewyoQbnuov1+U10 sfV2hSZ0rGfz+UJi1ev5jkpbE7YaIamf6aeZpYQXGWe7B8NLLhkFxp69qcmfFGgE+Tos feg3bPlzZp7YBj5x1AgxsMXzxVaiFAnKr3WwLsCYZX52wSjBlQ4DreHOES6MXAWjcmxU Up/P+z8qeAZDcW+B1GlxyHj30DcIusrb+4KZJ7aQY9Db3jQWrEfnaOD/S8ropE/w7gCh 2sndQMSCVukNXOhaYcd19nyvRgcQakuPoNqifHX0KWZOEtCso4PNt4MtARSikYQ7cGRc 5flw== X-Gm-Message-State: AOAM5329ZjmXMuRkkiCntAR2MPnZYtFx+SgWoOzvOqocM/ZVWJWrt2x6 +dsPKys5xUdnimFLoZO15L0TZ5uqXdA= X-Google-Smtp-Source: ABdhPJwOST8C6etrkmtD6y496t3clFRgQ+lPWLU+9wEfLz24+DXLlNZnqrwVh1X+d82rIlSsgUddLw== X-Received: by 2002:a63:450d:: with SMTP id s13mr2642071pga.246.1596710865774; Thu, 06 Aug 2020 03:47:45 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [RFC v3 10/71] target/riscv: rvv-1.0: check MSTATUS_VS when accessing vector csr registers Date: Thu, 6 Aug 2020 18:46:07 +0800 Message-Id: <20200806104709.13235-11-frank.chang@sifive.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200806104709.13235-1-frank.chang@sifive.com> References: <20200806104709.13235-1-frank.chang@sifive.com> 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=2607:f8b0:4864:20::433; envelope-from=frank.chang@sifive.com; helo=mail-pf1-x433.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, URIBL_BLOCKED=0.001 autolearn=unavailable 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: Frank Chang , Alistair Francis , Palmer Dabbelt , Sagar Karandikar , Bastian Koppelmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Frank Chang If VS field is off, accessing vector csr registers should raise an illegal-instruction exception. Signed-off-by: Frank Chang Reviewed-by: Richard Henderson --- target/riscv/csr.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 11ce6d4576a..50a178a60d0 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -60,6 +60,11 @@ static int fs(CPURISCVState *env, int csrno) static int vs(CPURISCVState *env, int csrno) { if (env->misa & RVV) { +#if !defined(CONFIG_USER_ONLY) + if (!env->debugger && !riscv_cpu_vector_enabled(env)) { + return -1; + } +#endif return 0; } return -1; --=20 2.17.1