static TranslationBlock *tb_find_slow(target_ulong pc, target_ulong cs_base, uint64_t flags) { TranslationBlock *tb, **ptb1; int code_gen_size; unsigned int h; target_ulong phys_pc, phys_page1, phys_page2, virt_page2; uint8_t *tc_ptr; spin_lock(&tb_lock); tb_invalidated_flag = 0; regs_to_env(); /* XXX: do it just before cpu_gen_code() */ /* find translated block using physical mappings */ phys_pc = get_phys_addr_code(env, pc); phys_page1 = phys_pc & TARGET_PAGE_MASK; phys_page2 = -1; h = tb_phys_hash_func(phys_pc); ptb1 = &tb_phys_hash[h]; for(;;) { tb = *ptb1; if (!tb) goto not_found; if (tb->pc == pc && tb->page_addr[0] == phys_page1 && tb->cs_base == cs_base && tb->flags == flags) { /* check next page if needed */ if (tb->page_addr[1] != -1) { virt_page2 = (pc & TARGET_PAGE_MASK) + TARGET_PAGE_SIZE; phys_page2 = get_phys_addr_code(env, virt_page2); if (tb->page_addr[1] == phys_page2) goto found; } else { goto found; } } ptb1 = &tb->phys_hash_next; } not_found: /* if no translated code available, then translate it now */ tb = tb_alloc(pc); if (!tb) { /* flush must be done */ tb_flush(env); /* cannot fail at this point */ tb = tb_alloc(pc); /* don't forget to invalidate previous TB info */ tb_invalidated_flag = 1; } tc_ptr = code_gen_ptr; tb->tc_ptr = tc_ptr; tb->cs_base = cs_base; tb->flags = flags; cpu_gen_code(env, tb, CODE_GEN_MAX_SIZE, &code_gen_size); code_gen_ptr = (void *)(((unsigned long)code_gen_ptr + code_gen_size + CODE_GEN_ALIGN - 1) & ~(CODE_GEN_ALIGN - 1)); /* check next page if needed */ virt_page2 = (pc + tb->size - 1) & TARGET_PAGE_MASK; phys_page2 = -1; if ((pc & TARGET_PAGE_MASK) != virt_page2) { phys_page2 = get_phys_addr_code(env, virt_page2); } tb_link_phys(tb, phys_pc, phys_page2); found: /* we add the TB in the virtual pc hash table */ env->tb_jmp_cache[tb_jmp_cache_hash_func(pc)] = tb; spin_unlock(&tb_lock); return tb; }