diff options
Diffstat (limited to 'target-sh4/helper.c')
| -rw-r--r-- | target-sh4/helper.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/target-sh4/helper.c b/target-sh4/helper.c index 06df9d1f35..6429862084 100644 --- a/target-sh4/helper.c +++ b/target-sh4/helper.c @@ -251,7 +251,7 @@ static int find_tlb_entry(CPUState * env, target_ulong address, for (i = 0; i < nbtlb; i++) { if (!entries[i].v) continue; /* Invalid entry */ - if (use_asid && entries[i].asid != asid && !entries[i].sh) + if (use_asid && entries[i].asid != asid) continue; /* Bad ASID */ #if 0 switch (entries[i].sz) { @@ -320,8 +320,14 @@ int find_itlb_entry(CPUState * env, target_ulong address, else if (e == MMU_DTLB_MISS && update) { e = find_tlb_entry(env, address, env->utlb, UTLB_SIZE, use_asid); if (e >= 0) { + tlb_t * ientry; n = itlb_replacement(env); - env->itlb[n] = env->utlb[e]; + ientry = &env->itlb[n]; + if (ientry->v) { + if (!same_tlb_entry_exists(env->utlb, UTLB_SIZE, ientry)) + tlb_flush_page(env, ientry->vpn << 10); + } + *ientry = env->utlb[e]; e = n; } else if (e == MMU_DTLB_MISS) e = MMU_ITLB_MISS; @@ -356,7 +362,7 @@ static int get_mmu_address(CPUState * env, target_ulong * physical, int use_asid, is_code, n; tlb_t *matching = NULL; - use_asid = (env->mmucr & MMUCR_SV) == 0 && (env->sr & SR_MD) == 0; + use_asid = (env->mmucr & MMUCR_SV) == 0 || (env->sr & SR_MD) == 0; is_code = env->pc == address; /* Hack */ /* Use a hack to find if this is an instruction or data access */ @@ -540,6 +546,17 @@ void cpu_load_tlb(CPUState * env) int n = cpu_mmucr_urc(env->mmucr); tlb_t * entry = &env->utlb[n]; + if (entry->v) { + /* Overwriting valid entry in utlb. */ + target_ulong address = entry->vpn << 10; + if (!same_tlb_entry_exists(env->itlb, ITLB_SIZE, entry)) { + tlb_flush_page(env, address); + } + } + + /* per utlb access cannot implemented. */ + increment_urc(env); + /* Take values into cpu status from registers. */ entry->asid = (uint8_t)cpu_pteh_asid(env->pteh); entry->vpn = cpu_pteh_vpn(env->pteh); |