diff options
| author | Michael Davidsaver <mdavidsaver@gmail.com> | 2017-02-28 12:08:17 +0000 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2017-02-28 12:08:17 +0000 |
| commit | a73c98e159d18155445d29b6044be6ad49fd802f (patch) | |
| tree | ae3ad5aa25517336f2519ac4a21f866e91efe59a /target | |
| parent | 7c14b3ac072c48614ca888e101d17ee64312c89f (diff) | |
| download | qemu-a73c98e159d18155445d29b6044be6ad49fd802f.zip qemu-a73c98e159d18155445d29b6044be6ad49fd802f.tar.gz qemu-a73c98e159d18155445d29b6044be6ad49fd802f.tar.bz2 | |
armv7m: Escalate exceptions to HardFault if necessary
The v7M exception architecture requires that if a synchronous
exception cannot be taken immediately (because it is disabled
or at too low a priority) then it should be escalated to
HardFault (and the HardFault exception is then taken).
Implement this escalation logic.
Signed-off-by: Michael Davidsaver <mdavidsaver@gmail.com>
[PMM: extracted from another patch]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Diffstat (limited to 'target')
| -rw-r--r-- | target/arm/helper.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/target/arm/helper.c b/target/arm/helper.c index bcedb4a..2fc6802 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -6106,8 +6106,6 @@ void arm_v7m_cpu_do_interrupt(CPUState *cs) /* For exceptions we just mark as pending on the NVIC, and let that handle it. */ - /* TODO: Need to escalate if the current priority is higher than the - one we're raising. */ switch (cs->exception_index) { case EXCP_UDEF: armv7m_nvic_set_pending(env->nvic, ARMV7M_EXCP_USAGE); |