target-arm: Use the right MMU index in arm_regime_using_lpae_format
arm_regime_using_lpae_format checks whether the LPAE extension is used for stage 1 translation regimes. MMU indexes not exclusively of a stage 1 regime won't work with this method. In case of ARMMMUIdx_S12NSE0 or ARMMMUIdx_S12NSE1, offset these values by ARMMMUIdx_S1NSE0 to get the right index indicating a stage 1 translation regime. Rename also the function to arm_s1_regime_using_lpae_format and update the comments to reflect the change. Signed-off-by: Alvise Rigo <a.rigo@virtualopensystems.com> Message-id: 1452854262-19550-1-git-send-email-a.rigo@virtualopensystems.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -5996,11 +5996,15 @@ static inline bool regime_using_lpae_format(CPUARMState *env,
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return false;
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return false;
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}
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}
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/* Returns true if the translation regime is using LPAE format page tables.
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/* Returns true if the stage 1 translation regime is using LPAE format page
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* Used when raising alignment exceptions, whose FSR changes depending on
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* tables. Used when raising alignment exceptions, whose FSR changes depending
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* whether the long or short descriptor format is in use. */
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* on whether the long or short descriptor format is in use. */
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bool arm_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx)
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bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx)
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{
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{
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if (mmu_idx == ARMMMUIdx_S12NSE0 || mmu_idx == ARMMMUIdx_S12NSE1) {
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mmu_idx += ARMMMUIdx_S1NSE0;
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}
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return regime_using_lpae_format(env, mmu_idx);
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return regime_using_lpae_format(env, mmu_idx);
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}
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}
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@ -441,8 +441,9 @@ struct ARMMMUFaultInfo {
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bool arm_tlb_fill(CPUState *cpu, vaddr address, int rw, int mmu_idx,
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bool arm_tlb_fill(CPUState *cpu, vaddr address, int rw, int mmu_idx,
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uint32_t *fsr, ARMMMUFaultInfo *fi);
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uint32_t *fsr, ARMMMUFaultInfo *fi);
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/* Return true if the translation regime is using LPAE format page tables */
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/* Return true if the stage 1 translation regime is using LPAE format page
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bool arm_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx);
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* tables */
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bool arm_s1_regime_using_lpae_format(CPUARMState *env, ARMMMUIdx mmu_idx);
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/* Raise a data fault alignment exception for the specified virtual address */
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/* Raise a data fault alignment exception for the specified virtual address */
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void arm_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr, int is_write,
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void arm_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr, int is_write,
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@ -149,7 +149,7 @@ void arm_cpu_do_unaligned_access(CPUState *cs, vaddr vaddr, int is_write,
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/* the DFSR for an alignment fault depends on whether we're using
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/* the DFSR for an alignment fault depends on whether we're using
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* the LPAE long descriptor format, or the short descriptor format
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* the LPAE long descriptor format, or the short descriptor format
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*/
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*/
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if (arm_regime_using_lpae_format(env, cpu_mmu_index(env, false))) {
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if (arm_s1_regime_using_lpae_format(env, cpu_mmu_index(env, false))) {
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env->exception.fsr = 0x21;
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env->exception.fsr = 0x21;
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} else {
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} else {
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env->exception.fsr = 0x1;
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env->exception.fsr = 0x1;
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