1/* 2 * internal execution defines for qemu 3 * 4 * Copyright (c) 2003 Fabrice Bellard 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, see <http://www.gnu.org/licenses/>. 18 */ 19 20#ifndef EXEC_TB_HASH_H 21#define EXEC_TB_HASH_H 22 23#include "exec/tb-hash-xx.h" 24 25#ifdef CONFIG_SOFTMMU 26 27/* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for 28 addresses on the same page. The top bits are the same. This allows 29 TLB invalidation to quickly clear a subset of the hash table. */ 30#define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2) 31#define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS) 32#define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1) 33#define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE) 34 35static inline unsigned int tb_jmp_cache_hash_page(target_ulong pc) 36{ 37 target_ulong tmp; 38 tmp = pc ^ (pc >> (TARGET_PAGE_BITS - TB_JMP_PAGE_BITS)); 39 return (tmp >> (TARGET_PAGE_BITS - TB_JMP_PAGE_BITS)) & TB_JMP_PAGE_MASK; 40} 41 42static inline unsigned int tb_jmp_cache_hash_func(target_ulong pc) 43{ 44 target_ulong tmp; 45 tmp = pc ^ (pc >> (TARGET_PAGE_BITS - TB_JMP_PAGE_BITS)); 46 return (((tmp >> (TARGET_PAGE_BITS - TB_JMP_PAGE_BITS)) & TB_JMP_PAGE_MASK) 47 | (tmp & TB_JMP_ADDR_MASK)); 48} 49 50#else 51 52/* In user-mode we can get better hashing because we do not have a TLB */ 53static inline unsigned int tb_jmp_cache_hash_func(target_ulong pc) 54{ 55 return (pc ^ (pc >> TB_JMP_CACHE_BITS)) & (TB_JMP_CACHE_SIZE - 1); 56} 57 58#endif /* CONFIG_SOFTMMU */ 59 60static inline 61uint32_t tb_hash_func(tb_page_addr_t phys_pc, target_ulong pc, uint32_t flags, 62 uint32_t cf_mask, uint32_t trace_vcpu_dstate) 63{ 64 return tb_hash_func7(phys_pc, pc, flags, cf_mask, trace_vcpu_dstate); 65} 66 67#endif 68