diff options
| author | Michael Davidsaver <mdavidsaver@gmail.com> | 2017-01-27 15:20:22 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-01-27 15:20:22 +0000 |
| commit | a20ee6005564590d33eabec11ed4dc7c432db36b (patch) | |
| tree | c77428f4d2e13798634b53bd7cf499cbae814af5 | |
| parent | abc24d86cc0364f402e438fae3acb14289b40734 (diff) | |
armv7m: Clear FAULTMASK on return from non-NMI exceptions
FAULTMASK must be cleared on return from all
exceptions other than NMI.
Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1484937883-1068-7-git-send-email-peter.maydell@linaro.org
| -rw-r--r-- | target/arm/helper.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index dc383d16bb..cfbc6229c2 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -5969,8 +5969,13 @@ static void do_v7m_exception_exit(CPUARMState *env) uint32_t xpsr; type = env->regs[15]; - if (env->v7m.exception != 0) + if (env->v7m.exception != ARMV7M_EXCP_NMI) { + /* Auto-clear FAULTMASK on return from other than NMI */ + env->daif &= ~PSTATE_F; + } + if (env->v7m.exception != 0) { armv7m_nvic_complete_irq(env->nvic, env->v7m.exception); + } /* Switch to the target stack. */ switch_v7m_sp(env, (type & 4) != 0); |