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target-arm: reject switching to monitor mode

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Reject switching to monitor mode from non-secure state.

Signed-off-by: Sergey Fedorov <s.fedorov@samsung.com>
Signed-off-by: Fabian Aggeler <aggelerf@ethz.ch>
Signed-off-by: Greg Bellows <greg.bellows@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1413910544-20150-4-git-send-email-greg.bellows@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Sergey Fedorov 2014-10-24 12:19:14 +01:00 committed by Peter Maydell
parent 19e0fefa6f
commit 027fc52704
1 changed files with 2 additions and 0 deletions
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2
target-arm/helper.c
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@ -3531,6 +3531,8 @@ static int bad_mode_switch(CPUARMState *env, int mode)
case ARM_CPU_MODE_IRQ:
case ARM_CPU_MODE_FIQ:
return 0;
case ARM_CPU_MODE_MON:
return !arm_is_secure(env);
default:
return 1;
}