diff options
| author | Peter Maydell <peter.maydell@linaro.org> | 2019-05-07 12:55:03 +0100 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2019-05-07 12:55:03 +0100 |
| commit | a03ffaefce5dbb455ee1bc7c7709faf377dfbd45 (patch) | |
| tree | 1a5c391572bc5ee823f3cac4cad37ffcd424b7ab | |
| parent | 339327b6d4a2830cba230c6be7a17a4a2fc3d546 (diff) | |
hw/intc/armv7m_nvic: Don't enable ARMV7M_EXCP_DEBUG from reset
The M-profile architecture specifies that the DebugMonitor exception
should be initially disabled, not enabled. It should be controlled
by the DEMCR register's MON_EN bit, but we don't implement that
register yet (like most of the debug architecture for M-profile).
Note that BKPT instructions will still work, because they
will be escalated to HardFault.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190430131439.25251-4-peter.maydell@linaro.org
| -rw-r--r-- | hw/intc/armv7m_nvic.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/intc/armv7m_nvic.c b/hw/intc/armv7m_nvic.c index 15cba63c96..3a346a682a 100644 --- a/hw/intc/armv7m_nvic.c +++ b/hw/intc/armv7m_nvic.c @@ -2491,10 +2491,12 @@ static void armv7m_nvic_reset(DeviceState *dev) * the System Handler Control register */ s->vectors[ARMV7M_EXCP_SVC].enabled = 1; - s->vectors[ARMV7M_EXCP_DEBUG].enabled = 1; s->vectors[ARMV7M_EXCP_PENDSV].enabled = 1; s->vectors[ARMV7M_EXCP_SYSTICK].enabled = 1; + /* DebugMonitor is enabled via DEMCR.MON_EN */ + s->vectors[ARMV7M_EXCP_DEBUG].enabled = 0; + resetprio = arm_feature(&s->cpu->env, ARM_FEATURE_V8) ? -4 : -3; s->vectors[ARMV7M_EXCP_RESET].prio = resetprio; s->vectors[ARMV7M_EXCP_NMI].prio = -2; |