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[2001:44b8:2176:c800:8cc6:2630:7d99:5ef1]) by smtp.gmail.com with ESMTPSA id w128sm100686177pfw.79.2019.01.08.14.32.46 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 08 Jan 2019 14:32:48 -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; bh=cgtR9AcclT/6PUb+U3TOK7K77PPNIIjwkFK/abHOz38=; b=GhjQtssPFwPTmYISib19M/WsSU9Jx3GNafPOLF2k5UMen3pcLkzI7849tGvou/D2k5 RQ4a+H7EBKSws0q0idkzbRlPIpQgeSMjFxtkLfaD34mYxkSUEDoR1mx/nxA1T4vTpcym gHZXLOfEE/1m6YnnZlY58m7e525R87zfGW0Wk= 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=cgtR9AcclT/6PUb+U3TOK7K77PPNIIjwkFK/abHOz38=; b=TyLxWPgTcfHTpBZVF5wz+IlPo2w0ul7xa8UozQjG6k4GDvq6arFUFzsXg77V6WJCfs 0ymW1GuyS0Jtdf1LA3/dpt/p2KAAICkygTKjFagqUfD66ydLVFGF3NFu4h5tYHNpZm13 npWupsmUuGqBo/hAO7NsxhMCzpQ/YO7ip7R7CraZ0s1C0Xmx51QibtX0mX7YAVJeVt5s BobDTUxrGXl9tRxWj5eBnnSpFBa88sFtL4vPUe4nhqp7TnZfqJHVkVI7qW9KImhzFZyg sFhW13sWouB2qpvslBW3zKEmERNzNDna1S20VNa+xCLvtNLyEhvJDcYDsdxtRHGbqwjT XObw== X-Gm-Message-State: AJcUukcxFxPko/XdpAlas6IdKYA6Po8MW0KdLriFncnacPfj5wIwxL6O OaemXunq3scVTvrDHORB0GgGg9epcEo= X-Google-Smtp-Source: ALg8bN5xCKRJ9VwHIHU1QTGw7jwBes+eWS6r+M7KrIucrt/v6+0JTcG9Xqn7Ug3a9vme13V7XnTyyA== X-Received: by 2002:a65:65c9:: with SMTP id y9mr3229495pgv.438.1546986769084; Tue, 08 Jan 2019 14:32:49 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Date: Wed, 9 Jan 2019 08:31:26 +1000 Message-Id: <20190108223129.5570-29-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190108223129.5570-1-richard.henderson@linaro.org> References: <20190108223129.5570-1-richard.henderson@linaro.org> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::443 Subject: [Qemu-devel] [PATCH v3 28/31] target/arm: Add PAuth system registers X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: peter.maydell@linaro.org 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" Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson ---- v3: Fix typos. --- target/arm/helper.c | 70 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) diff --git a/target/arm/helper.c b/target/arm/helper.c index e610155166..0e1bf521ab 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -5061,6 +5061,70 @@ static CPAccessResult access_lor_other(CPUARMState *= env, return access_lor_ns(env); } =20 +#ifdef TARGET_AARCH64 +static CPAccessResult access_pauth(CPUARMState *env, const ARMCPRegInfo *r= i, + bool isread) +{ + int el =3D arm_current_el(env); + + if (el < 2 && + arm_feature(env, ARM_FEATURE_EL2) && + !(arm_hcr_el2_eff(env) & HCR_APK)) { + return CP_ACCESS_TRAP_EL2; + } + if (el < 3 && + arm_feature(env, ARM_FEATURE_EL3) && + !(env->cp15.scr_el3 & SCR_APK)) { + return CP_ACCESS_TRAP_EL3; + } + return CP_ACCESS_OK; +} + +static const ARMCPRegInfo pauth_reginfo[] =3D { + { .name =3D "APDAKEYLO_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 2, .opc2 =3D 0, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apda_key.lo) }, + { .name =3D "APDAKEYHI_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 2, .opc2 =3D 1, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apda_key.hi) }, + { .name =3D "APDBKEYLO_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 2, .opc2 =3D 2, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apdb_key.lo) }, + { .name =3D "APDBKEYHI_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 2, .opc2 =3D 3, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apdb_key.hi) }, + { .name =3D "APGAKEYLO_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 3, .opc2 =3D 0, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apga_key.lo) }, + { .name =3D "APGAKEYHI_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 3, .opc2 =3D 1, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apga_key.hi) }, + { .name =3D "APIAKEYLO_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 1, .opc2 =3D 0, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apia_key.lo) }, + { .name =3D "APIAKEYHI_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 1, .opc2 =3D 1, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apia_key.hi) }, + { .name =3D "APIBKEYLO_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 1, .opc2 =3D 2, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apib_key.lo) }, + { .name =3D "APIBKEYHI_EL1", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 2, .crm =3D 1, .opc2 =3D 3, + .access =3D PL1_RW, .accessfn =3D access_pauth, + .fieldoffset =3D offsetof(CPUARMState, apib_key.hi) }, + REGINFO_SENTINEL +}; +#endif + void register_cp_regs_for_features(ARMCPU *cpu) { /* Register all the coprocessor registers based on feature bits */ @@ -5845,6 +5909,12 @@ void register_cp_regs_for_features(ARMCPU *cpu) define_one_arm_cp_reg(cpu, &zcr_el3_reginfo); } } + +#ifdef TARGET_AARCH64 + if (cpu_isar_feature(aa64_pauth, cpu)) { + define_arm_cp_regs(cpu, pauth_reginfo); + } +#endif } =20 void arm_cpu_register_gdb_regs_for_features(ARMCPU *cpu) --=20 2.17.2