diff options
Diffstat (limited to 'target-arm/helper.c')
| -rw-r--r-- | target-arm/helper.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target-arm/helper.c b/target-arm/helper.c index c491cd80ab..b2d2440edd 100644 --- a/target-arm/helper.c +++ b/target-arm/helper.c @@ -5316,6 +5316,7 @@ void cpsr_write(CPUARMState *env, uint32_t val, uint32_t mask, env->daif |= val & CPSR_AIF & mask; if (write_type != CPSRWriteRaw && + (env->uncached_cpsr & CPSR_M) != CPSR_USER && ((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. |