diff options
| -rw-r--r-- | target-arm/helper.c | 5 | ||||
| -rw-r--r-- | target-arm/kvm64.c | 1 | ||||
| -rw-r--r-- | target-arm/machine.c | 2 | ||||
| -rw-r--r-- | target-arm/op_helper.c | 5 |
4 files changed, 7 insertions, 6 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index 014bb80d85..c491cd80ab 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -5268,7 +5268,7 @@ void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask, * In a V8 implementation, it is permitted for privileged software to * change the CPSR A/F bits regardless of the SCR.AW/FW bits. */ - if (!arm_feature(env, ARM_FEATURE_V8) && + if (write_type != CPSRWriteRaw && !arm_feature(env, ARM_FEATURE_V8) && arm_feature(env, ARM_FEATURE_EL3) && !arm_feature(env, ARM_FEATURE_EL2) && !arm_is_secure(env)) { @@ -5315,7 +5315,8 @@ void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask, env->daif &= ~(CPSR_AIF & mask); env->daif |= val & CPSR_AIF & mask; - if ((env->uncached_cpsr ^ val) & mask & CPSR_M) { + if (write_type != CPSRWriteRaw && + ((env->uncached_cpsr ^ val) & mask & CPSR_M)) { if (bad_mode_switch(env, val & CPSR_M)) { /* Attempt to switch to an invalid mode: this is UNPREDICTABLE. * We choose to ignore the attempt and leave the CPSR M field diff --git a/target-arm/kvm64.c b/target-arm/kvm64.c index 08c2c81479..e8527bf0cc 100644 --- a/target-arm/kvm64.c +++ b/target-arm/kvm64.c @@ -722,7 +722,6 @@ int kvm_arch_get_registers(CPUState *cs) if (is_a64(env)) { pstate_write(env, val); } else { - env->uncached_cpsr = val & CPSR_M; cpsr_write(env, val, 0xffffffff, CPSRWriteRaw); } diff --git a/target-arm/machine.c b/target-arm/machine.c index 0fc7df0ee2..03a73d950e 100644 --- a/target-arm/machine.c +++ b/target-arm/machine.c @@ -173,8 +173,6 @@ static int get_cpsr(QEMUFile *f, void *opaque, size_t size) return 0; } - /* Avoid mode switch when restoring CPSR */ - env->uncached_cpsr = val & CPSR_M; cpsr_write(env, val, 0xffffffff, CPSRWriteRaw); return 0; } diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c index 543d33aad2..4881e34177 100644 --- a/target-arm/op_helper.c +++ b/target-arm/op_helper.c @@ -779,7 +779,10 @@ void HELPER(exception_return)(CPUARMState *env) if (!return_to_aa64) { env->aarch64 = 0; - env->uncached_cpsr = spsr & CPSR_M; + /* We do a raw CPSR write because aarch64_sync_64_to_32() + * will sort the register banks out for us, and we've already + * caught all the bad-mode cases in el_from_spsr(). + */ cpsr_write(env, spsr, ~0, CPSRWriteRaw); if (!arm_singlestep_active(env)) { env->uncached_cpsr &= ~PSTATE_SS; |