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target/arm: Stub arm_hcr_el2_eff for m-profile

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M-profile doesn't have HCR_EL2.  While we could test features
before each call, zero is a generally safe return value to
disable the code in the caller.  This test is required to
avoid an assert in arm_is_secure_below_el3.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20230227225832.816605-3-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Richard Henderson 2023-02-27 12:58:30 -10:00 committed by Peter Maydell
parent 9094f9551d
commit a0262ba68c
1 changed files with 3 additions and 0 deletions
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3
target/arm/helper.c
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@ -5787,6 +5787,9 @@ uint64_t arm_hcr_el2_eff_secstate(CPUARMState *env, bool secure)
uint64_t arm_hcr_el2_eff(CPUARMState *env)
{
if (arm_feature(env, ARM_FEATURE_M)) {
return 0;
}
return arm_hcr_el2_eff_secstate(env, arm_is_secure_below_el3(env));
}