1 /* 2 * common defines for all CPUs 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 #ifndef CPU_DEFS_H 20 #define CPU_DEFS_H 21 22 #ifndef NEED_CPU_H 23 #error cpu.h included from common code 24 #endif 25 26 #include "config.h" 27 #include <inttypes.h> 28 #include "qemu/osdep.h" 29 #include "qemu/queue.h" 30 #ifndef CONFIG_USER_ONLY 31 #include "exec/hwaddr.h" 32 #endif 33 34 #ifndef TARGET_LONG_BITS 35 #error TARGET_LONG_BITS must be defined before including this header 36 #endif 37 38 #define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8) 39 40 /* target_ulong is the type of a virtual address */ 41 #if TARGET_LONG_SIZE == 4 42 typedef int32_t target_long; 43 typedef uint32_t target_ulong; 44 #define TARGET_FMT_lx "%08x" 45 #define TARGET_FMT_ld "%d" 46 #define TARGET_FMT_lu "%u" 47 #elif TARGET_LONG_SIZE == 8 48 typedef int64_t target_long; 49 typedef uint64_t target_ulong; 50 #define TARGET_FMT_lx "%016" PRIx64 51 #define TARGET_FMT_ld "%" PRId64 52 #define TARGET_FMT_lu "%" PRIu64 53 #else 54 #error TARGET_LONG_SIZE undefined 55 #endif 56 57 #define EXCP_INTERRUPT 0x10000 /* async interruption */ 58 #define EXCP_HLT 0x10001 /* hlt instruction reached */ 59 #define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */ 60 #define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */ 61 #define EXCP_YIELD 0x10004 /* cpu wants to yield timeslice to another */ 62 63 /* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for 64 addresses on the same page. The top bits are the same. This allows 65 TLB invalidation to quickly clear a subset of the hash table. */ 66 #define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2) 67 #define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS) 68 #define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1) 69 #define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE) 70 71 #if !defined(CONFIG_USER_ONLY) 72 #define CPU_TLB_BITS 8 73 #define CPU_TLB_SIZE (1 << CPU_TLB_BITS) 74 /* use a fully associative victim tlb of 8 entries */ 75 #define CPU_VTLB_SIZE 8 76 77 #if HOST_LONG_BITS == 32 && TARGET_LONG_BITS == 32 78 #define CPU_TLB_ENTRY_BITS 4 79 #else 80 #define CPU_TLB_ENTRY_BITS 5 81 #endif 82 83 typedef struct CPUTLBEntry { 84 /* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address 85 bit TARGET_PAGE_BITS-1..4 : Nonzero for accesses that should not 86 go directly to ram. 87 bit 3 : indicates that the entry is invalid 88 bit 2..0 : zero 89 */ 90 target_ulong addr_read; 91 target_ulong addr_write; 92 target_ulong addr_code; 93 /* Addend to virtual address to get host address. IO accesses 94 use the corresponding iotlb value. */ 95 uintptr_t addend; 96 /* padding to get a power of two size */ 97 uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) - 98 (sizeof(target_ulong) * 3 + 99 ((-sizeof(target_ulong) * 3) & (sizeof(uintptr_t) - 1)) + 100 sizeof(uintptr_t))]; 101 } CPUTLBEntry; 102 103 QEMU_BUILD_BUG_ON(sizeof(CPUTLBEntry) != (1 << CPU_TLB_ENTRY_BITS)); 104 105 #define CPU_COMMON_TLB \ 106 /* The meaning of the MMU modes is defined in the target code. */ \ 107 CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \ 108 CPUTLBEntry tlb_v_table[NB_MMU_MODES][CPU_VTLB_SIZE]; \ 109 hwaddr iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \ 110 hwaddr iotlb_v[NB_MMU_MODES][CPU_VTLB_SIZE]; \ 111 target_ulong tlb_flush_addr; \ 112 target_ulong tlb_flush_mask; \ 113 target_ulong vtlb_index; \ 114 115 #else 116 117 #define CPU_COMMON_TLB 118 119 #endif 120 121 122 #define CPU_TEMP_BUF_NLONGS 128 123 #define CPU_COMMON \ 124 /* soft mmu support */ \ 125 CPU_COMMON_TLB \ 126 127 #endif 128