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([2602:ae:1547:e101:3cf2:c634:5b19:25f6]) by smtp.gmail.com with ESMTPSA id s22-20020a17090aba1600b001d9780b7779sm4227856pjr.15.2022.06.07.13.33.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Jun 2022 13:33:29 -0700 (PDT) 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=BaEHnyzZVvArILP5rZ7zZnIc67EOdE5VHFcxDg3gfVA=; b=TwvKToC7AqOOeBq5uriR71I5v5+RfjB7+1QsFvgZZUx6AvqwPCvYfXEQpCz1a99o9M pDoCBAbqFKzSSniAe0Lv0dvZPF/Rvc9/xm/Cye8x1oAQAd05NLXzW8OzjxBMHu4xEPX3 +Rk/01OJPLlrCYuVxh+8F8++4VOtG5ILcpK2/s+NG0fgYql0lM3s2z433pGcbg4ZYtp4 NgqrwKgDy9Sl7mohs5wxjmsFq+9Mk1SalCXodvQa0gH4dvhl3SwCyTV10yfkn4k0ZZYr ln5qQ1X9/vtRTepcJ1+d39Kv2AfYkwQCx3pDcS1EmXQRxurQ2I4WjKP7eyYprMn/x79h DKVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BaEHnyzZVvArILP5rZ7zZnIc67EOdE5VHFcxDg3gfVA=; b=WZ+K5SiXB5a+pDkhMzJQ83s8KdbUrlt7+PhgOqZaMXiwsRM/4iLGqJr1ElPu3pvpfs g37xGplLcptsEJFhS3xfF5OD27jroYwRB5fGew7Lopj7jpxTTfZePCXLinihPnTL0YGV CNQPhFivXxoWi1e3htXf5iCNrF+IiWBlTH2gn134qzQPAlPBQQLdJF9D5CUiqz+8fw9h wJcySlxRVZznsDmGOmwyyJ2rY/pI6TW9M81zcVHaxtNJKGKmI5g2zRdkFMRsXkLJKl0i FsyEi0i2bikmEnc5AqjryKbqHqtAcKFpOnUiblzdo75BBZycI713bblzulWOROGPga79 Lbng== X-Gm-Message-State: AOAM530gYVo3dclpIX0E8MbH6LMOz4uEKO1Kv6is3xget2gTgPh0AGPM u5e42bSzO8kRgQyBfaXba18adw1q/eZAuQ== X-Google-Smtp-Source: ABdhPJyNDUxnZZcO8pTm5X7v3hW3Dg9bLJ/Bi7akBC/QUYoLQygWIaW5MKwzokjaqyjHq4KYLP0+SA== X-Received: by 2002:a17:90b:4a92:b0:1e8:2c09:d008 with SMTP id lp18-20020a17090b4a9200b001e82c09d008mr27171112pjb.169.1654634009526; Tue, 07 Jun 2022 13:33:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org Subject: [PATCH v2 24/71] target/arm: Add ARM_CP_SME Date: Tue, 7 Jun 2022 13:32:19 -0700 Message-Id: <20220607203306.657998-25-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220607203306.657998-1-richard.henderson@linaro.org> References: <20220607203306.657998-1-richard.henderson@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=2607:f8b0:4864:20::633; envelope-from=richard.henderson@linaro.org; helo=mail-pl1-x633.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, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action 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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1654635964519100001 Content-Type: text/plain; charset="utf-8" This will be used for controlling access to SME cpregs. Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson --- target/arm/cpregs.h | 5 +++++ target/arm/translate-a64.c | 18 ++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/target/arm/cpregs.h b/target/arm/cpregs.h index d9b678c2f1..d30758ee71 100644 --- a/target/arm/cpregs.h +++ b/target/arm/cpregs.h @@ -113,6 +113,11 @@ enum { ARM_CP_EL3_NO_EL2_UNDEF =3D 1 << 16, ARM_CP_EL3_NO_EL2_KEEP =3D 1 << 17, ARM_CP_EL3_NO_EL2_C_NZ =3D 1 << 18, + /* + * Flag: Access check for this sysreg is constrained by the + * ARM pseudocode function CheckSMEAccess(). + */ + ARM_CP_SME =3D 1 << 19, }; =20 /* diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index 8bbd1b7f07..f51d80d816 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1186,6 +1186,22 @@ bool sve_access_check(DisasContext *s) return fp_access_check(s); } =20 +/* + * Check that SME access is enabled, raise an exception if not. + * Note that this function corresponds to CheckSMEAccess and is + * only used directly for cpregs. + */ +static bool sme_access_check(DisasContext *s) +{ + if (s->sme_excp_el) { + gen_exception_insn(s, s->pc_curr, EXCP_UDEF, + syn_smetrap(SME_ET_AccessTrap, false), + s->sme_excp_el); + return false; + } + return true; +} + /* * This utility function is for doing register extension with an * optional shift. You will likely want to pass a temporary for the @@ -1958,6 +1974,8 @@ static void handle_sys(DisasContext *s, uint32_t insn= , bool isread, return; } else if ((ri->type & ARM_CP_SVE) && !sve_access_check(s)) { return; + } else if ((ri->type & ARM_CP_SME) && !sme_access_check(s)) { + return; } =20 if ((tb_cflags(s->base.tb) & CF_USE_ICOUNT) && (ri->type & ARM_CP_IO))= { --=20 2.34.1