diff options
Diffstat (limited to 'target-xtensa/helper.c')
| -rw-r--r-- | target-xtensa/helper.c | 56 |
1 files changed, 32 insertions, 24 deletions
diff --git a/target-xtensa/helper.c b/target-xtensa/helper.c index 04c4f60..ea4bf73 100644 --- a/target-xtensa/helper.c +++ b/target-xtensa/helper.c @@ -130,11 +130,11 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUXtensaState *env, target_ulong add uint32_t page_size; unsigned access; - if (xtensa_get_physical_addr(env, addr, 0, 0, + if (xtensa_get_physical_addr(env, false, addr, 0, 0, &paddr, &page_size, &access) == 0) { return paddr; } - if (xtensa_get_physical_addr(env, addr, 2, 0, + if (xtensa_get_physical_addr(env, false, addr, 2, 0, &paddr, &page_size, &access) == 0) { return paddr; } @@ -443,10 +443,9 @@ static bool is_access_granted(unsigned access, int is_write) } } -static int autorefill_mmu(CPUXtensaState *env, uint32_t vaddr, bool dtlb, - uint32_t *wi, uint32_t *ei, uint8_t *ring); +static int get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte); -static int get_physical_addr_mmu(CPUXtensaState *env, +static int get_physical_addr_mmu(CPUXtensaState *env, bool update_tlb, uint32_t vaddr, int is_write, int mmu_idx, uint32_t *paddr, uint32_t *page_size, unsigned *access) { @@ -454,19 +453,38 @@ static int get_physical_addr_mmu(CPUXtensaState *env, uint32_t wi; uint32_t ei; uint8_t ring; + uint32_t vpn; + uint32_t pte; + const xtensa_tlb_entry *entry = NULL; + xtensa_tlb_entry tmp_entry; int ret = xtensa_tlb_lookup(env, vaddr, dtlb, &wi, &ei, &ring); if ((ret == INST_TLB_MISS_CAUSE || ret == LOAD_STORE_TLB_MISS_CAUSE) && (mmu_idx != 0 || ((vaddr ^ env->sregs[PTEVADDR]) & 0xffc00000)) && - autorefill_mmu(env, vaddr, dtlb, &wi, &ei, &ring) == 0) { + get_pte(env, vaddr, &pte) == 0) { + ring = (pte >> 4) & 0x3; + wi = 0; + split_tlb_entry_spec_way(env, vaddr, dtlb, &vpn, wi, &ei); + + if (update_tlb) { + wi = ++env->autorefill_idx & 0x3; + xtensa_tlb_set_entry(env, dtlb, wi, ei, vpn, pte); + env->sregs[EXCVADDR] = vaddr; + qemu_log("%s: autorefill(%08x): %08x -> %08x\n", + __func__, vaddr, vpn, pte); + } else { + xtensa_tlb_set_entry_mmu(env, &tmp_entry, dtlb, wi, ei, vpn, pte); + entry = &tmp_entry; + } ret = 0; } if (ret != 0) { return ret; } - const xtensa_tlb_entry *entry = - xtensa_tlb_get_entry(env, dtlb, wi, ei); + if (entry == NULL) { + entry = xtensa_tlb_get_entry(env, dtlb, wi, ei); + } if (ring < mmu_idx) { return dtlb ? @@ -489,31 +507,21 @@ static int get_physical_addr_mmu(CPUXtensaState *env, return 0; } -static int autorefill_mmu(CPUXtensaState *env, uint32_t vaddr, bool dtlb, - uint32_t *wi, uint32_t *ei, uint8_t *ring) +static int get_pte(CPUXtensaState *env, uint32_t vaddr, uint32_t *pte) { uint32_t paddr; uint32_t page_size; unsigned access; uint32_t pt_vaddr = (env->sregs[PTEVADDR] | (vaddr >> 10)) & 0xfffffffc; - int ret = get_physical_addr_mmu(env, pt_vaddr, 0, 0, + int ret = get_physical_addr_mmu(env, false, pt_vaddr, 0, 0, &paddr, &page_size, &access); qemu_log("%s: trying autorefill(%08x) -> %08x\n", __func__, vaddr, ret ? ~0 : paddr); if (ret == 0) { - uint32_t vpn; - uint32_t pte = ldl_phys(paddr); - - *ring = (pte >> 4) & 0x3; - *wi = (++env->autorefill_idx) & 0x3; - split_tlb_entry_spec_way(env, vaddr, dtlb, &vpn, *wi, ei); - xtensa_tlb_set_entry(env, dtlb, *wi, *ei, vpn, pte); - env->sregs[EXCVADDR] = vaddr; - qemu_log("%s: autorefill(%08x): %08x -> %08x\n", - __func__, vaddr, vpn, pte); + *pte = ldl_phys(paddr); } return ret; } @@ -549,13 +557,13 @@ static int get_physical_addr_region(CPUXtensaState *env, * * \return 0 if ok, exception cause code otherwise */ -int xtensa_get_physical_addr(CPUXtensaState *env, +int xtensa_get_physical_addr(CPUXtensaState *env, bool update_tlb, uint32_t vaddr, int is_write, int mmu_idx, uint32_t *paddr, uint32_t *page_size, unsigned *access) { if (xtensa_option_enabled(env->config, XTENSA_OPTION_MMU)) { - return get_physical_addr_mmu(env, vaddr, is_write, mmu_idx, - paddr, page_size, access); + return get_physical_addr_mmu(env, update_tlb, + vaddr, is_write, mmu_idx, paddr, page_size, access); } else if (xtensa_option_bits_enabled(env->config, XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_PROTECTION) | XTENSA_OPTION_BIT(XTENSA_OPTION_REGION_TRANSLATION))) { |