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target/arm: add arm_is_el2_enabled() helper

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This checks if EL2 is enabled (meaning EL2 registers take effects) in
the current security context.

Backports f3ee5160ce3c03795a28e16d1a0b4916a6c959f4
This commit is contained in:
Rémi Denis-Courmont 2021-03-04 13:44:03 -05:00 committed by Lioncash
parent 7402645436
commit 7a694223ca
1 changed files with 17 additions and 0 deletions
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17
qemu/target/arm/cpu.h
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@ -2016,6 +2016,18 @@ static inline bool arm_is_secure(CPUARMState *env)
return arm_is_secure_below_el3(env);
}
/*
* Return true if the current security state has AArch64 EL2 or AArch32 Hyp.
* This corresponds to the pseudocode EL2Enabled()
*/
static inline bool arm_is_el2_enabled(CPUARMState *env)
{
if (arm_feature(env, ARM_FEATURE_EL2)) {
return !arm_is_secure_below_el3(env);
}
return false;
}
#else
static inline bool arm_is_secure_below_el3(CPUARMState *env)
{
@ -2026,6 +2038,11 @@ static inline bool arm_is_secure(CPUARMState *env)
{
return false;
}
static inline bool arm_is_el2_enabled(CPUARMState *env)
{
return false;
}
#endif
/**