diff options
Diffstat (limited to 'target-sparc/helper.c')
| -rw-r--r-- | target-sparc/helper.c | 153 |
1 files changed, 112 insertions, 41 deletions
diff --git a/target-sparc/helper.c b/target-sparc/helper.c index 7eea1acbd..efab885b8 100644 --- a/target-sparc/helper.c +++ b/target-sparc/helper.c @@ -378,7 +378,7 @@ static inline int ultrasparc_tag_match(SparcTLBEntry *tlb, { uint64_t mask; - switch ((tlb->tte >> 61) & 3) { + switch (TTE_PGSIZE(tlb->tte)) { default: case 0x0: // 8k mask = 0xffffffffffffe000ULL; @@ -413,6 +413,7 @@ static int get_physical_address_data(CPUState *env, { unsigned int i; uint64_t context; + uint64_t sfsr = 0; int is_user = (mmu_idx == MMU_USER_IDX || mmu_idx == MMU_USER_SECONDARY_IDX); @@ -427,54 +428,88 @@ static int get_physical_address_data(CPUState *env, case MMU_USER_IDX: case MMU_KERNEL_IDX: context = env->dmmu.mmu_primary_context & 0x1fff; + sfsr |= SFSR_CT_PRIMARY; break; case MMU_USER_SECONDARY_IDX: case MMU_KERNEL_SECONDARY_IDX: context = env->dmmu.mmu_secondary_context & 0x1fff; + sfsr |= SFSR_CT_SECONDARY; break; case MMU_NUCLEUS_IDX: + sfsr |= SFSR_CT_NUCLEUS; + /* FALLTHRU */ default: context = 0; break; } + if (rw == 1) { + sfsr |= SFSR_WRITE_BIT; + } else if (rw == 4) { + sfsr |= SFSR_NF_BIT; + } + for (i = 0; i < 64; i++) { // ctx match, vaddr match, valid? if (ultrasparc_tag_match(&env->dtlb[i], address, context, physical)) { - - uint8_t fault_type = 0; + int do_fault = 0; // access ok? - if ((env->dtlb[i].tte & 0x4) && is_user) { - fault_type |= 1; /* privilege violation */ - env->exception_index = TT_DFAULT; + /* multiple bits in SFSR.FT may be set on TT_DFAULT */ + if (TTE_IS_PRIV(env->dtlb[i].tte) && is_user) { + do_fault = 1; + sfsr |= SFSR_FT_PRIV_BIT; /* privilege violation */ DPRINTF_MMU("DFAULT at %" PRIx64 " context %" PRIx64 " mmu_idx=%d tl=%d\n", address, context, mmu_idx, env->tl); - } else if (!(env->dtlb[i].tte & 0x2) && (rw == 1)) { + } + if (rw == 4) { + if (TTE_IS_SIDEEFFECT(env->dtlb[i].tte)) { + do_fault = 1; + sfsr |= SFSR_FT_NF_E_BIT; + } + } else { + if (TTE_IS_NFO(env->dtlb[i].tte)) { + do_fault = 1; + sfsr |= SFSR_FT_NFO_BIT; + } + } + + if (do_fault) { + /* faults above are reported with TT_DFAULT. */ + env->exception_index = TT_DFAULT; + } else if (!TTE_IS_W_OK(env->dtlb[i].tte) && (rw == 1)) { + do_fault = 1; env->exception_index = TT_DPROT; DPRINTF_MMU("DPROT at %" PRIx64 " context %" PRIx64 " mmu_idx=%d tl=%d\n", address, context, mmu_idx, env->tl); - } else { + } + + if (!do_fault) { *prot = PAGE_READ; - if (env->dtlb[i].tte & 0x2) + if (TTE_IS_W_OK(env->dtlb[i].tte)) { *prot |= PAGE_WRITE; + } TTE_SET_USED(env->dtlb[i].tte); return 0; } - if (env->dmmu.sfsr & 1) /* Fault status register */ - env->dmmu.sfsr = 2; /* overflow (not read before - another fault) */ + if (env->dmmu.sfsr & SFSR_VALID_BIT) { /* Fault status register */ + sfsr |= SFSR_OW_BIT; /* overflow (not read before + another fault) */ + } - env->dmmu.sfsr |= (is_user << 3) | ((rw == 1) << 2) | 1; + if (env->pstate & PS_PRIV) { + sfsr |= SFSR_PR_BIT; + } - env->dmmu.sfsr |= (fault_type << 7); + /* FIXME: ASI field in SFSR must be set */ + env->dmmu.sfsr = sfsr | SFSR_VALID_BIT; env->dmmu.sfar = address; /* Fault address register */ @@ -487,6 +522,11 @@ static int get_physical_address_data(CPUState *env, DPRINTF_MMU("DMISS at %" PRIx64 " context %" PRIx64 "\n", address, context); + /* + * On MMU misses: + * - UltraSPARC IIi: SFSR and SFAR unmodified + * - JPS1: SFAR updated and some fields of SFSR updated + */ env->dmmu.tag_access = (address & ~0x1fffULL) | context; env->exception_index = TT_DMISS; return 1; @@ -522,11 +562,23 @@ static int get_physical_address_code(CPUState *env, if (ultrasparc_tag_match(&env->itlb[i], address, context, physical)) { // access ok? - if ((env->itlb[i].tte & 0x4) && is_user) { - if (env->immu.sfsr) /* Fault status register */ - env->immu.sfsr = 2; /* overflow (not read before - another fault) */ - env->immu.sfsr |= (is_user << 3) | 1; + if (TTE_IS_PRIV(env->itlb[i].tte) && is_user) { + /* Fault status register */ + if (env->immu.sfsr & SFSR_VALID_BIT) { + env->immu.sfsr = SFSR_OW_BIT; /* overflow (not read before + another fault) */ + } else { + env->immu.sfsr = 0; + } + if (env->pstate & PS_PRIV) { + env->immu.sfsr |= SFSR_PR_BIT; + } + if (env->tl > 0) { + env->immu.sfsr |= SFSR_CT_NUCLEUS; + } + + /* FIXME: ASI field in SFSR must be set */ + env->immu.sfsr |= SFSR_FT_PRIV_BIT | SFSR_VALID_BIT; env->exception_index = TT_TFAULT; env->immu.tag_access = (address & ~0x1fffULL) | context; @@ -632,7 +684,7 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env) } else { (*cpu_fprintf)(f, "DMMU dump\n"); for (i = 0; i < 64; i++) { - switch ((env->dtlb[i].tte >> 61) & 3) { + switch (TTE_PGSIZE(env->dtlb[i].tte)) { default: case 0x0: mask = " 8k"; @@ -647,16 +699,17 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env) mask = " 4M"; break; } - if ((env->dtlb[i].tte & 0x8000000000000000ULL) != 0) { - (*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %" PRIx64 + if (TTE_IS_VALID(env->dtlb[i].tte)) { + (*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %llx" ", %s, %s, %s, %s, ctx %" PRId64 " %s\n", i, env->dtlb[i].tag & (uint64_t)~0x1fffULL, - env->dtlb[i].tte & (uint64_t)0x1ffffffe000ULL, + TTE_PA(env->dtlb[i].tte), mask, - env->dtlb[i].tte & 0x4? "priv": "user", - env->dtlb[i].tte & 0x2? "RW": "RO", - env->dtlb[i].tte & 0x40? "locked": "unlocked", + TTE_IS_PRIV(env->dtlb[i].tte) ? "priv" : "user", + TTE_IS_W_OK(env->dtlb[i].tte) ? "RW" : "RO", + TTE_IS_LOCKED(env->dtlb[i].tte) ? + "locked" : "unlocked", env->dtlb[i].tag & (uint64_t)0x1fffULL, TTE_IS_GLOBAL(env->dtlb[i].tte)? "global" : "local"); @@ -668,7 +721,7 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env) } else { (*cpu_fprintf)(f, "IMMU dump\n"); for (i = 0; i < 64; i++) { - switch ((env->itlb[i].tte >> 61) & 3) { + switch (TTE_PGSIZE(env->itlb[i].tte)) { default: case 0x0: mask = " 8k"; @@ -683,15 +736,16 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env) mask = " 4M"; break; } - if ((env->itlb[i].tte & 0x8000000000000000ULL) != 0) { - (*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %" PRIx64 + if (TTE_IS_VALID(env->itlb[i].tte)) { + (*cpu_fprintf)(f, "[%02u] VA: %" PRIx64 ", PA: %llx" ", %s, %s, %s, ctx %" PRId64 " %s\n", i, env->itlb[i].tag & (uint64_t)~0x1fffULL, - env->itlb[i].tte & (uint64_t)0x1ffffffe000ULL, + TTE_PA(env->itlb[i].tte), mask, - env->itlb[i].tte & 0x4? "priv": "user", - env->itlb[i].tte & 0x40? "locked": "unlocked", + TTE_IS_PRIV(env->itlb[i].tte) ? "priv" : "user", + TTE_IS_LOCKED(env->itlb[i].tte) ? + "locked" : "unlocked", env->itlb[i].tag & (uint64_t)0x1fffULL, TTE_IS_GLOBAL(env->itlb[i].tte)? "global" : "local"); @@ -705,26 +759,43 @@ void dump_mmu(FILE *f, fprintf_function cpu_fprintf, CPUState *env) #if !defined(CONFIG_USER_ONLY) +static int cpu_sparc_get_phys_page(CPUState *env, target_phys_addr_t *phys, + target_ulong addr, int rw, int mmu_idx) +{ + target_ulong page_size; + int prot, access_index; + + return get_physical_address(env, phys, &prot, &access_index, addr, rw, + mmu_idx, &page_size); +} + +#if defined(TARGET_SPARC64) target_phys_addr_t cpu_get_phys_page_nofault(CPUState *env, target_ulong addr, int mmu_idx) { target_phys_addr_t phys_addr; - target_ulong page_size; - int prot, access_index; - if (get_physical_address(env, &phys_addr, &prot, &access_index, addr, 2, - mmu_idx, &page_size) != 0) - if (get_physical_address(env, &phys_addr, &prot, &access_index, addr, - 0, mmu_idx, &page_size) != 0) - return -1; - if (cpu_get_physical_page_desc(phys_addr) == IO_MEM_UNASSIGNED) + if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 4, mmu_idx) != 0) { return -1; + } return phys_addr; } +#endif target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) { - return cpu_get_phys_page_nofault(env, addr, cpu_mmu_index(env)); + target_phys_addr_t phys_addr; + int mmu_idx = cpu_mmu_index(env); + + if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 2, mmu_idx) != 0) { + if (cpu_sparc_get_phys_page(env, &phys_addr, addr, 0, mmu_idx) != 0) { + return -1; + } + } + if (cpu_get_physical_page_desc(phys_addr) == IO_MEM_UNASSIGNED) { + return -1; + } + return phys_addr; } #endif |