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[97.113.188.82]) by smtp.gmail.com with ESMTPSA id v6sm187429pgb.2.2019.02.21.18.41.10 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 21 Feb 2019 18:41:10 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Date: Thu, 21 Feb 2019 18:41:05 -0800 Message-Id: <20190222024106.9167-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20190222024106.9167-1-richard.henderson@linaro.org> References: <20190222024106.9167-1-richard.henderson@linaro.org> MIME-Version: 1.0 X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::543 Subject: [Qemu-devel] [PATCH v3 2/3] target/arm: Rebuild hflags at el changes and MSR writes 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, cota@braap.org, alex.bennee@linaro.org Errors-To: qemu-devel-bounces+patch=linaro.org@nongnu.org Sender: "Qemu-devel" Now setting, but not relying upon, env->hflags. Reviewed-by: Alex Bennée Signed-off-by: Richard Henderson --- v2: Fixed partial conversion to assignment to env->hflags. --- target/arm/internals.h | 1 + linux-user/syscall.c | 1 + target/arm/cpu.c | 1 + target/arm/helper-a64.c | 3 +++ target/arm/helper.c | 2 ++ target/arm/machine.c | 1 + target/arm/op_helper.c | 1 + target/arm/translate-a64.c | 6 +++++- target/arm/translate.c | 14 ++++++++++++-- 9 files changed, 27 insertions(+), 3 deletions(-) -- 2.17.2 diff --git a/target/arm/internals.h b/target/arm/internals.h index 8c1b813364..235f4fafec 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -970,5 +970,6 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va, uint32_t rebuild_hflags_a32(CPUARMState *env, int el); uint32_t rebuild_hflags_a64(CPUARMState *env, int el); +void rebuild_hflags_any(CPUARMState *env); #endif diff --git a/linux-user/syscall.c b/linux-user/syscall.c index 5bbb72f3d5..123f342bdc 100644 --- a/linux-user/syscall.c +++ b/linux-user/syscall.c @@ -9691,6 +9691,7 @@ static abi_long do_syscall1(void *cpu_env, int num, abi_long arg1, aarch64_sve_narrow_vq(env, vq); } env->vfp.zcr_el[1] = vq - 1; + arm_rebuild_hflags(env); ret = vq * 16; } return ret; diff --git a/target/arm/cpu.c b/target/arm/cpu.c index edf6e0e1f1..e4da513eb3 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -390,6 +390,7 @@ static void arm_cpu_reset(CPUState *s) hw_breakpoint_update_all(cpu); hw_watchpoint_update_all(cpu); + arm_rebuild_hflags(env); } bool arm_cpu_exec_interrupt(CPUState *cs, int interrupt_request) diff --git a/target/arm/helper-a64.c b/target/arm/helper-a64.c index 70850e564d..17200f1288 100644 --- a/target/arm/helper-a64.c +++ b/target/arm/helper-a64.c @@ -995,6 +995,7 @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc) } else { env->regs[15] = new_pc & ~0x3; } + env->hflags = rebuild_hflags_a32(env, new_el); qemu_log_mask(CPU_LOG_INT, "Exception return from AArch64 EL%d to " "AArch32 EL%d PC 0x%" PRIx32 "\n", cur_el, new_el, env->regs[15]); @@ -1006,10 +1007,12 @@ void HELPER(exception_return)(CPUARMState *env, uint64_t new_pc) } aarch64_restore_sp(env, new_el); env->pc = new_pc; + env->hflags = rebuild_hflags_a64(env, new_el); qemu_log_mask(CPU_LOG_INT, "Exception return from AArch64 EL%d to " "AArch64 EL%d PC 0x%" PRIx64 "\n", cur_el, new_el, env->pc); } + /* * Note that cur_el can never be 0. If new_el is 0, then * el0_a64 is return_to_aa64, else el0_a64 is ignored. diff --git a/target/arm/helper.c b/target/arm/helper.c index 29486a09f6..1140739d6b 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -9201,6 +9201,7 @@ static void take_aarch32_exception(CPUARMState *env, int new_mode, env->regs[14] = env->regs[15] + offset; } env->regs[15] = newpc; + env->hflags = rebuild_hflags_a32(env, arm_current_el(env)); } static void arm_cpu_do_interrupt_aarch32_hyp(CPUState *cs) @@ -9546,6 +9547,7 @@ static void arm_cpu_do_interrupt_aarch64(CPUState *cs) pstate_write(env, PSTATE_DAIF | new_mode); env->aarch64 = 1; + env->hflags = rebuild_hflags_a64(env, new_el); aarch64_restore_sp(env, new_el); env->pc = addr; diff --git a/target/arm/machine.c b/target/arm/machine.c index 124192bfc2..e944d6b736 100644 --- a/target/arm/machine.c +++ b/target/arm/machine.c @@ -743,6 +743,7 @@ static int cpu_post_load(void *opaque, int version_id) if (!kvm_enabled()) { pmu_op_finish(&cpu->env); } + arm_rebuild_hflags(&cpu->env); return 0; } diff --git a/target/arm/op_helper.c b/target/arm/op_helper.c index c998eadfaa..f82eeae7e4 100644 --- a/target/arm/op_helper.c +++ b/target/arm/op_helper.c @@ -571,6 +571,7 @@ void HELPER(cpsr_write_eret)(CPUARMState *env, uint32_t val) */ env->regs[15] &= (env->thumb ? ~1 : ~3); + env->hflags = rebuild_hflags_a32(env, arm_current_el(env)); qemu_mutex_lock_iothread(); arm_call_el_change_hook(arm_env_get_cpu(env)); qemu_mutex_unlock_iothread(); diff --git a/target/arm/translate-a64.c b/target/arm/translate-a64.c index af8e4fd4be..a786c7ef5f 100644 --- a/target/arm/translate-a64.c +++ b/target/arm/translate-a64.c @@ -1841,11 +1841,15 @@ static void handle_sys(DisasContext *s, uint32_t insn, bool isread, /* I/O operations must end the TB here (whether read or write) */ gen_io_end(); s->base.is_jmp = DISAS_UPDATE; - } else if (!isread && !(ri->type & ARM_CP_SUPPRESS_TB_END)) { + } + if (!isread && !(ri->type & ARM_CP_SUPPRESS_TB_END)) { /* We default to ending the TB on a coprocessor register write, * but allow this to be suppressed by the register definition * (usually only necessary to work around guest bugs). */ + TCGv_i32 tcg_el = tcg_const_i32(s->current_el); + gen_helper_rebuild_hflags_a64(cpu_env, tcg_el); + tcg_temp_free_i32(tcg_el); s->base.is_jmp = DISAS_UPDATE; } } diff --git a/target/arm/translate.c b/target/arm/translate.c index dac737f6ca..1cdb575ccd 100644 --- a/target/arm/translate.c +++ b/target/arm/translate.c @@ -8563,6 +8563,8 @@ static int disas_coproc_insn(DisasContext *s, uint32_t insn) ri = get_arm_cp_reginfo(s->cp_regs, ENCODE_CP_REG(cpnum, is64, s->ns, crn, crm, opc1, opc2)); if (ri) { + bool need_exit_tb; + /* Check access permissions */ if (!cp_access_ok(s->current_el, ri, isread)) { return 1; @@ -8735,15 +8737,23 @@ static int disas_coproc_insn(DisasContext *s, uint32_t insn) } } + need_exit_tb = false; if ((tb_cflags(s->base.tb) & CF_USE_ICOUNT) && (ri->type & ARM_CP_IO)) { /* I/O operations must end the TB here (whether read or write) */ gen_io_end(); - gen_lookup_tb(s); - } else if (!isread && !(ri->type & ARM_CP_SUPPRESS_TB_END)) { + need_exit_tb = true; + } + if (!isread && !(ri->type & ARM_CP_SUPPRESS_TB_END)) { /* We default to ending the TB on a coprocessor register write, * but allow this to be suppressed by the register definition * (usually only necessary to work around guest bugs). */ + TCGv_i32 tcg_el = tcg_const_i32(s->current_el); + gen_helper_rebuild_hflags_a32(cpu_env, tcg_el); + tcg_temp_free_i32(tcg_el); + need_exit_tb = true; + } + if (need_exit_tb) { gen_lookup_tb(s); }