diff options
Diffstat (limited to 'target-ppc')
| -rw-r--r-- | target-ppc/mmu-hash32.c | 82 |
1 files changed, 39 insertions, 43 deletions
diff --git a/target-ppc/mmu-hash32.c b/target-ppc/mmu-hash32.c index 40d3564626..d4d91dd6e2 100644 --- a/target-ppc/mmu-hash32.c +++ b/target-ppc/mmu-hash32.c @@ -164,15 +164,14 @@ static int hash32_bat_601_prot(CPUPPCState *env, return ppc_hash32_pp_check(key, pp, 0); } -static int ppc_hash32_get_bat(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, - target_ulong virtual, int rwx) +static hwaddr ppc_hash32_bat_lookup(CPUPPCState *env, target_ulong ea, int rwx, + int *prot) { target_ulong *BATlt, *BATut; - int i, prot; - int ret = -1; + int i; LOG_BATS("%s: %cBAT v " TARGET_FMT_lx "\n", __func__, - rwx == 2 ? 'I' : 'D', virtual); + rwx == 2 ? 'I' : 'D', ea); if (rwx == 2) { BATlt = env->IBAT[1]; BATut = env->IBAT[0]; @@ -187,52 +186,46 @@ static int ppc_hash32_get_bat(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, if (unlikely(env->mmu_model == POWERPC_MMU_601)) { mask = hash32_bat_601_size(env, batu, batl); - prot = hash32_bat_601_prot(env, batu, batl); } else { mask = hash32_bat_size(env, batu, batl); - prot = hash32_bat_prot(env, batu, batl); } LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx " BATl " TARGET_FMT_lx "\n", __func__, - type == ACCESS_CODE ? 'I' : 'D', i, virtual, batu, batl); - - if (mask && ((virtual & mask) == (batu & BATU32_BEPI))) { - /* BAT matches */ - /* Get physical address */ - ctx->raddr = (batl & mask) | (virtual & ~mask); - ctx->raddr &= TARGET_PAGE_MASK; - /* Compute access rights */ - ctx->prot = prot; - ret = ppc_hash32_check_prot(ctx->prot, rwx); - if (ret == 0) { - LOG_BATS("BAT %d match: r " TARGET_FMT_plx " prot=%c%c\n", - i, ctx->raddr, ctx->prot & PAGE_READ ? 'R' : '-', - ctx->prot & PAGE_WRITE ? 'W' : '-'); + type == ACCESS_CODE ? 'I' : 'D', i, ea, batu, batl); + + if (mask && ((ea & mask) == (batu & BATU32_BEPI))) { + hwaddr raddr = (batl & mask) | (ea & ~mask); + + if (unlikely(env->mmu_model == POWERPC_MMU_601)) { + *prot = hash32_bat_601_prot(env, batu, batl); + } else { + *prot = hash32_bat_prot(env, batu, batl); } - break; + + return raddr & TARGET_PAGE_MASK; } } - if (ret < 0) { + + /* No hit */ #if defined(DEBUG_BATS) - if (qemu_log_enabled()) { - LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", virtual); - for (i = 0; i < 4; i++) { - BATu = &BATut[i]; - BATl = &BATlt[i]; - BEPIu = *BATu & BATU32_BEPIU; - BEPIl = *BATu & BATU32_BEPIL; - bl = (*BATu & 0x00001FFC) << 15; - LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx - " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " - TARGET_FMT_lx " " TARGET_FMT_lx "\n", - __func__, type == ACCESS_CODE ? 'I' : 'D', i, virtual, - *BATu, *BATl, BEPIu, BEPIl, bl); - } + if (qemu_log_enabled()) { + LOG_BATS("no BAT match for " TARGET_FMT_lx ":\n", ea); + for (i = 0; i < 4; i++) { + BATu = &BATut[i]; + BATl = &BATlt[i]; + BEPIu = *BATu & BATU32_BEPIU; + BEPIl = *BATu & BATU32_BEPIL; + bl = (*BATu & 0x00001FFC) << 15; + LOG_BATS("%s: %cBAT%d v " TARGET_FMT_lx " BATu " TARGET_FMT_lx + " BATl " TARGET_FMT_lx "\n\t" TARGET_FMT_lx " " + TARGET_FMT_lx " " TARGET_FMT_lx "\n", + __func__, type == ACCESS_CODE ? 'I' : 'D', i, ea, + *BATu, *BATl, BEPIu, BEPIl, bl); } -#endif } - /* No hit */ - return ret; +#endif + + return -1; } static int ppc_hash32_direct_store(CPUPPCState *env, target_ulong sr, @@ -405,9 +398,12 @@ static int ppc_hash32_translate(CPUPPCState *env, struct mmu_ctx_hash32 *ctx, /* 2. Check Block Address Translation entries (BATs) */ if (env->nb_BATs != 0) { - ret = ppc_hash32_get_bat(env, ctx, eaddr, rwx); - if (ret == 0) { - return 0; + ctx->raddr = ppc_hash32_bat_lookup(env, eaddr, rwx, &ctx->prot); + if (ctx->raddr != -1) { + ret = ppc_hash32_check_prot(ctx->prot, rwx); + if (ret == 0) { + return 0; + } } } |