static int find_pte64(CPUPPCState *env, struct mmu_ctx_hash64 *ctx, ppc_slb_t *slb, target_ulong eaddr, int rwx) { hwaddr pteg_off, pte_offset; ppc_hash_pte64_t pte; uint64_t vsid, pageaddr, ptem; hwaddr hash; int segment_bits, target_page_bits; int ret; ret = -1; /* No entry found */ if (slb->vsid & SLB_VSID_B) { vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT_1T; segment_bits = 40; } else { vsid = (slb->vsid & SLB_VSID_VSID) >> SLB_VSID_SHIFT; segment_bits = 28; } target_page_bits = (slb->vsid & SLB_VSID_L) ? TARGET_PAGE_BITS_16M : TARGET_PAGE_BITS; ctx->key = !!(msr_pr ? (slb->vsid & SLB_VSID_KP) : (slb->vsid & SLB_VSID_KS)); pageaddr = eaddr & ((1ULL << segment_bits) - (1ULL << target_page_bits)); if (slb->vsid & SLB_VSID_B) { hash = vsid ^ (vsid << 25) ^ (pageaddr >> target_page_bits); } else { hash = vsid ^ (pageaddr >> target_page_bits); } /* Only 5 bits of the page index are used in the AVPN */ ptem = (slb->vsid & SLB_VSID_PTEM) | ((pageaddr >> 16) & ((1ULL << segment_bits) - 0x80)); ret = -1; /* Page address translation */ LOG_MMU("htab_base " TARGET_FMT_plx " htab_mask " TARGET_FMT_plx " hash " TARGET_FMT_plx "\n", env->htab_base, env->htab_mask, hash); /* Primary PTEG lookup */ LOG_MMU("0 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx " vsid=" TARGET_FMT_lx " ptem=" TARGET_FMT_lx " hash=" TARGET_FMT_plx "\n", env->htab_base, env->htab_mask, vsid, ptem, hash); pteg_off = (hash * HASH_PTEG_SIZE_64) & env->htab_mask; pte_offset = ppc_hash64_pteg_search(env, pteg_off, 0, ptem, &pte); if (pte_offset == -1) { /* Secondary PTEG lookup */ LOG_MMU("1 htab=" TARGET_FMT_plx "/" TARGET_FMT_plx " vsid=" TARGET_FMT_lx " api=" TARGET_FMT_lx " hash=" TARGET_FMT_plx "\n", env->htab_base, env->htab_mask, vsid, ptem, ~hash); pteg_off = (~hash * HASH_PTEG_SIZE_64) & env->htab_mask; pte_offset = ppc_hash64_pteg_search(env, pteg_off, 1, ptem, &pte); } if (pte_offset != -1) { ret = pte64_check(ctx, pte.pte0, pte.pte1, rwx); LOG_MMU("found PTE at addr %08" HWADDR_PRIx " prot=%01x ret=%d\n", ctx->raddr, ctx->prot, ret); /* Update page flags */ if (ppc_hash64_pte_update_flags(ctx, &pte.pte1, ret, rwx) == 1) { ppc_hash64_store_hpte1(env, pte_offset, pte.pte1); } } /* We have a TLB that saves 4K pages, so let's * split a huge page to 4k chunks */ if (target_page_bits != TARGET_PAGE_BITS) { ctx->raddr |= (eaddr & ((1 << target_page_bits) - 1)) & TARGET_PAGE_MASK; } return ret; }