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[97.126.117.207]) by smtp.gmail.com with ESMTPSA id i6sm32724751pgi.40.2019.07.19.14.03.37 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Fri, 19 Jul 2019 14:03:37 -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; bh=HVWcOf4G2zu+00boFsNQK0A4cfcZIeDQ0O/gtXTZHjo=; b=HnaKW/jBNwlFcHkFGUJqmMDsIlrMH5AoRiGR3gKU3LCNpmbCz1R2CnGMDgH/68iiAN 7cN1I6WMhvvfIT+djZHfBM27Kl3oaNl+IewziHdjQ7iSKBhDxPZo2qfSs8rpT1MEXkP8 qp303JUUw/tK/epNipWWHsiwIobroVbaj5Hkw4kaaVbZnoC7iJYYJum2vJjMjsi0/AVG 2md0ORVD4DP2eprk2KcsI7WXGetjA0vO81jbEOJh7xoO+QFCQJWas/++pSUzJomDHcu7 /z+Ko/MgRIe4XqZ+pTYvHY7nejtibHYA4WS1dcOJdslc9MTzKaoOkMiQLZZMsukuEJLv TRDQ== 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=HVWcOf4G2zu+00boFsNQK0A4cfcZIeDQ0O/gtXTZHjo=; b=CPyAUOHmmfRBDmWNvS8MccbqWyTnvy5PJX5spyq+cdzvVPD0AaZugaRpA4nJ6X1Y9q FJYcOg4SuyJkcKxLLzIS3OJ1QIXilRMIrITKMHbX8aDa8KgioaLwLofkI6PFnvNdmwC3 zb2ZLltTuiaCrKDQ01imK7sFTGe7eWyoY4uH4vptvLNIr5X7R3YSkIhPrsO5+ZxpXscY I2IUI+xb5AwKAicII7DVGK2r+VuNSHj4ALocTWICaX9Dzo5q8A4t9vyWmcCRLViLe9Op 0F22bsua/GaG/cMYjQaqJVopg1uZ1gj7rjR9k3tEYVbHmy8adQ1TTeokR+cZ0EdthoLl dMtg== X-Gm-Message-State: APjAAAU6wIHNm2rck+xlgMPE/sBe5JLcj2bxQA36z6l7R4sOv4psHO4k YHTbXrK8LPwAz3z3xjFlBf224/besOY= X-Google-Smtp-Source: APXvYqxrhvxY4Mk/ePegGvkfZFMwB47IjP6bgooe1myUiUDBYuBrlAdItEWOG5ddTS7dDKhbE3dH7A== X-Received: by 2002:a17:902:3181:: with SMTP id x1mr57910135plb.135.1563570218077; Fri, 19 Jul 2019 14:03:38 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Date: Fri, 19 Jul 2019 14:03:10 -0700 Message-Id: <20190719210326.15466-9-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190719210326.15466-1-richard.henderson@linaro.org> References: <20190719210326.15466-1-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::642 Subject: [Qemu-devel] [PATCH for-4.2 08/24] target/arm: Add CONTEXTIDR_EL2 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, beata.michalska@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" Not all of the breakpoint types are supported, but those that only examine contextidr are extended to support the new register. Signed-off-by: Richard Henderson Reviewed-by: Alex Benn=C3=A9e --- target/arm/debug_helper.c | 50 +++++++++++++++++++++++++++++---------- target/arm/helper.c | 11 +++++++++ 2 files changed, 49 insertions(+), 12 deletions(-) diff --git a/target/arm/debug_helper.c b/target/arm/debug_helper.c index dde80273ff..2e3e90c6a5 100644 --- a/target/arm/debug_helper.c +++ b/target/arm/debug_helper.c @@ -20,6 +20,7 @@ static bool linked_bp_matches(ARMCPU *cpu, int lbn) int ctx_cmps =3D extract32(cpu->dbgdidr, 20, 4); int bt; uint32_t contextidr; + uint64_t hcr_el2; =20 /* * Links to unimplemented or non-context aware breakpoints are @@ -40,24 +41,44 @@ static bool linked_bp_matches(ARMCPU *cpu, int lbn) } =20 bt =3D extract64(bcr, 20, 4); - - /* - * We match the whole register even if this is AArch32 using the - * short descriptor format (in which case it holds both PROCID and ASI= D), - * since we don't implement the optional v7 context ID masking. - */ - contextidr =3D extract64(env->cp15.contextidr_el[1], 0, 32); + hcr_el2 =3D arm_hcr_el2_eff(env); =20 switch (bt) { case 3: /* linked context ID match */ - if (arm_current_el(env) > 1) { - /* Context matches never fire in EL2 or (AArch64) EL3 */ + switch (arm_current_el(env)) { + default: + /* Context matches never fire in AArch64 EL3 */ return false; + case 2: + if (!(hcr_el2 & HCR_E2H)) { + /* Context matches never fire in EL2 without E2H enabled. = */ + return false; + } + contextidr =3D env->cp15.contextidr_el[2]; + break; + case 1: + contextidr =3D env->cp15.contextidr_el[1]; + break; + case 0: + if ((hcr_el2 & (HCR_E2H | HCR_TGE)) =3D=3D (HCR_E2H | HCR_TGE)= ) { + contextidr =3D env->cp15.contextidr_el[2]; + } else { + contextidr =3D env->cp15.contextidr_el[1]; + } + break; } - return (contextidr =3D=3D extract64(env->cp15.dbgbvr[lbn], 0, 32)); - case 5: /* linked address mismatch (reserved in AArch64) */ + break; + + case 7: /* linked contextidr_el1 match */ + contextidr =3D env->cp15.contextidr_el[1]; + break; + case 13: /* linked contextidr_el2 match */ + contextidr =3D env->cp15.contextidr_el[2]; + break; + case 9: /* linked VMID match (reserved if no EL2) */ case 11: /* linked context ID and VMID match (reserved if no EL2) */ + case 15: /* linked full context ID match */ default: /* * Links to Unlinked context breakpoints must generate no @@ -66,7 +87,12 @@ static bool linked_bp_matches(ARMCPU *cpu, int lbn) return false; } =20 - return false; + /* + * We match the whole register even if this is AArch32 using the + * short descriptor format (in which case it holds both PROCID and ASI= D), + * since we don't implement the optional v7 context ID masking. + */ + return contextidr =3D=3D (uint32_t)env->cp15.dbgbvr[lbn]; } =20 static bool bp_wp_matches(ARMCPU *cpu, int n, bool is_wp) diff --git a/target/arm/helper.c b/target/arm/helper.c index 0a55096770..d1bf31ab74 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -6801,6 +6801,17 @@ void register_cp_regs_for_features(ARMCPU *cpu) define_arm_cp_regs(cpu, lor_reginfo); } =20 + if (arm_feature(env, ARM_FEATURE_EL2) && cpu_isar_feature(aa64_vh, cpu= )) { + static const ARMCPRegInfo vhe_reginfo[] =3D { + { .name =3D "CONTEXTIDR_EL2", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 4, .crn =3D 13, .crm =3D 0, .opc2 =3D= 1, + .access =3D PL2_RW, + .fieldoffset =3D offsetof(CPUARMState, cp15.contextidr_el[2]= ) }, + REGINFO_SENTINEL + }; + define_arm_cp_regs(cpu, vhe_reginfo); + } + if (cpu_isar_feature(aa64_sve, cpu)) { define_one_arm_cp_reg(cpu, &zcr_el1_reginfo); if (arm_feature(env, ARM_FEATURE_EL2)) { --=20 2.17.1