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target-arm: Add Hyp mode checks to bad_mode_switch()

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We don't actually support Hyp mode yet, but add the correct
checks for it to the bad_mode_switch() function for completeness.

Backports commit e6c8fc07b4fce0729bb747770756835f4b0ca7f4 from qemu
This commit is contained in:
Peter Maydell 2018-02-20 22:20:16 -05:00 committed by Lioncash
parent 339e3e340e
commit 4919c7287c
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1 changed files with 3 additions and 0 deletions
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3
qemu/target-arm/helper.c
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@ -4521,6 +4521,9 @@ static int bad_mode_switch(CPUARMState *env, int mode)
* allows FIQ mode to be Secure-only. (In v8 this doesn't exist.)
*/
return 0;
case ARM_CPU_MODE_HYP:
return !arm_feature(env, ARM_FEATURE_EL2)
|| arm_current_el(env) < 2 || arm_is_secure(env);
case ARM_CPU_MODE_MON:
return !arm_is_secure(env);
default: