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target/arm: Implement FEAT_S2FWB

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Implement the handling of FEAT_S2FWB; the meat of this is in the new
combined_attrs_fwb() function which combines S1 and S2 attributes
when HCR_EL2.FWB is set.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20220505183950.2781801-4-peter.maydell@linaro.org
This commit is contained in:
Peter Maydell 2022-05-05 19:39:49 +01:00
parent 4a0b47c815
commit 8c7e17ef38
2 changed files with 86 additions and 3 deletions
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5
target/arm/cpu.h
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@ -3941,6 +3941,11 @@ static inline bool isar_feature_aa64_st(const ARMISARegisters *id)
return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, ST) != 0;
}
static inline bool isar_feature_aa64_fwb(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, FWB) != 0;
}
static inline bool isar_feature_aa64_bti(const ARMISARegisters *id)
{
return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, BT) != 0;