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[81.2.115.148]) by smtp.gmail.com with ESMTPSA id e22sm3362454wme.45.2020.02.13.06.42.18 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Feb 2020 06:42:18 -0800 (PST) From: Peter Maydell To: qemu-devel@nongnu.org Subject: [PULL 27/46] target/arm: Update MSR access to UAO Date: Thu, 13 Feb 2020 14:41:26 +0000 Message-Id: <20200213144145.818-28-peter.maydell@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200213144145.818-1-peter.maydell@linaro.org> References: <20200213144145.818-1-peter.maydell@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2a00:1450:4864:20::32e 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: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Richard Henderson Reviewed-by: Peter Maydell Signed-off-by: Richard Henderson Message-id: 20200208125816.14954-19-richard.henderson@linaro.org Signed-off-by: Peter Maydell --- target/arm/cpu.h | 6 ++++++ target/arm/internals.h | 3 +++ target/arm/helper.c | 21 +++++++++++++++++++++ target/arm/translate-a64.c | 14 ++++++++++++++ 4 files changed, 44 insertions(+) diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 71879393c22..e943ffe8a9a 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -1253,6 +1253,7 @@ void pmu_init(ARMCPU *cpu); #define PSTATE_IL (1U << 20) #define PSTATE_SS (1U << 21) #define PSTATE_PAN (1U << 22) +#define PSTATE_UAO (1U << 23) #define PSTATE_V (1U << 28) #define PSTATE_C (1U << 29) #define PSTATE_Z (1U << 30) @@ -3642,6 +3643,11 @@ static inline bool isar_feature_aa64_ats1e1(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64mmfr1, ID_AA64MMFR1, PAN) >= 2; } +static inline bool isar_feature_aa64_uao(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, UAO) != 0; +} + static inline bool isar_feature_aa64_bti(const ARMISARegisters *id) { return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, BT) != 0; diff --git a/target/arm/internals.h b/target/arm/internals.h index 4a139644b54..58c4d707c5d 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1112,6 +1112,9 @@ static inline uint32_t aarch64_pstate_valid_mask(const ARMISARegisters *id) if (isar_feature_aa64_pan(id)) { valid |= PSTATE_PAN; } + if (isar_feature_aa64_uao(id)) { + valid |= PSTATE_UAO; + } return valid; } diff --git a/target/arm/helper.c b/target/arm/helper.c index d29722d8acb..11a5f0be52f 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4191,6 +4191,24 @@ static const ARMCPRegInfo pan_reginfo = { .readfn = aa64_pan_read, .writefn = aa64_pan_write }; +static uint64_t aa64_uao_read(CPUARMState *env, const ARMCPRegInfo *ri) +{ + return env->pstate & PSTATE_UAO; +} + +static void aa64_uao_write(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t value) +{ + env->pstate = (env->pstate & ~PSTATE_UAO) | (value & PSTATE_UAO); +} + +static const ARMCPRegInfo uao_reginfo = { + .name = "UAO", .state = ARM_CP_STATE_AA64, + .opc0 = 3, .opc1 = 0, .crn = 4, .crm = 2, .opc2 = 4, + .type = ARM_CP_NO_RAW, .access = PL1_RW, + .readfn = aa64_uao_read, .writefn = aa64_uao_write +}; + static CPAccessResult aa64_cacheop_access(CPUARMState *env, const ARMCPRegInfo *ri, bool isread) @@ -7664,6 +7682,9 @@ void register_cp_regs_for_features(ARMCPU *cpu) define_arm_cp_regs(cpu, ats1cp_reginfo); } #endif + if (cpu_isar_feature(aa64_uao, cpu)) { + define_one_arm_cp_reg(cpu, &uao_reginfo); + } if (arm_feature(env, ARM_FEATURE_EL2) && cpu_isar_feature(aa64_vh, cpu)) { define_arm_cp_regs(cpu, vhe_reginfo); diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index d8ba240a155..7c26c3bfebb 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1602,6 +1602,20 @@ static void handle_msr_i(DisasContext *s, uint32_t insn, s->base.is_jmp = DISAS_NEXT; break; + case 0x03: /* UAO */ + if (!dc_isar_feature(aa64_uao, s) || s->current_el == 0) { + goto do_unallocated; + } + if (crm & 1) { + set_pstate_bits(PSTATE_UAO); + } else { + clear_pstate_bits(PSTATE_UAO); + } + t1 = tcg_const_i32(s->current_el); + gen_helper_rebuild_hflags_a64(cpu_env, t1); + tcg_temp_free_i32(t1); + break; + case 0x04: /* PAN */ if (!dc_isar_feature(aa64_pan, s) || s->current_el == 0) { goto do_unallocated; -- 2.20.1