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| author | Rémi Denis-Courmont | 2021-01-08 10:08:16 +0100 |
|---|---|---|
| committer | Peter Maydell | 2021-01-12 11:03:04 +0100 |
| commit | c36c65ea3c35b309d524c05a1c05fdeabf83ddd5 (patch) | |
| tree | 5bf1638946f5fac7c30bd0d90a129c7883ba71c4 /target/arm | |
| parent | Merge remote-tracking branch 'remotes/huth-gitlab/tags/pull-request-2021-01-1... (diff) | |
| download | qemu-c36c65ea3c35b309d524c05a1c05fdeabf83ddd5.tar.gz qemu-c36c65ea3c35b309d524c05a1c05fdeabf83ddd5.tar.xz qemu-c36c65ea3c35b309d524c05a1c05fdeabf83ddd5.zip | |
target/arm: ARMv8.4-TTST extension
This adds for the Small Translation tables extension in AArch64 state.
Signed-off-by: Rémi Denis-Courmont <remi.denis.courmont@huawei.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'target/arm')
| -rw-r--r-- | target/arm/cpu.h | 5 | ||||
| -rw-r--r-- | target/arm/helper.c | 15 |
2 files changed, 18 insertions, 2 deletions
diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 7e6c881a7e..ad37ff61c6 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -3936,6 +3936,11 @@ static inline bool isar_feature_aa64_uao(const ARMISARegisters *id) return FIELD_EX64(id->id_aa64mmfr2, ID_AA64MMFR2, UAO) != 0; } +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_bti(const ARMISARegisters *id) { return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, BT) != 0; diff --git a/target/arm/helper.c b/target/arm/helper.c index d077dd9ef5..5ab3f5ace3 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -10842,7 +10842,7 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va, { uint64_t tcr = regime_tcr(env, mmu_idx)->raw_tcr; bool epd, hpd, using16k, using64k; - int select, tsz, tbi; + int select, tsz, tbi, max_tsz; if (!regime_has_2_ranges(mmu_idx)) { select = 0; @@ -10877,7 +10877,14 @@ ARMVAParameters aa64_va_parameters(CPUARMState *env, uint64_t va, hpd = extract64(tcr, 42, 1); } } - tsz = MIN(tsz, 39); /* TODO: ARMv8.4-TTST */ + + if (cpu_isar_feature(aa64_st, env_archcpu(env))) { + max_tsz = 48 - using64k; + } else { + max_tsz = 39; + } + + tsz = MIN(tsz, max_tsz); tsz = MAX(tsz, 16); /* TODO: ARMv8.2-LVA */ /* Present TBI as a composite with TBID. */ @@ -11096,6 +11103,10 @@ static bool get_phys_addr_lpae(CPUARMState *env, uint64_t address, if (!aarch64 || stride == 9) { /* AArch32 or 4KB pages */ startlevel = 2 - sl0; + + if (cpu_isar_feature(aa64_st, cpu)) { + startlevel &= 3; + } } else { /* 16KB or 64KB pages */ startlevel = 3 - sl0; |