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[v7,03/32] target-arm: reject switching to monitor mode

Message ID 1413910544-20150-4-git-send-email-greg.bellows@linaro.org
State New
Headers show

Commit Message

Greg Bellows Oct. 21, 2014, 4:55 p.m. UTC 
From: Sergey Fedorov <s.fedorov@samsung.com>

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>
---
 target-arm/helper.c | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/target-arm/helper.c b/target-arm/helper.c
index d837820..c36ee6a 100644
--- a/target-arm/helper.c
+++ b/target-arm/helper.c
@@ -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;
     }