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 <setjmp.h> 28 #include <inttypes.h> 29 #include <signal.h> 30 #include "osdep.h" 31 #include "qemu-queue.h" 32 #include "targphys.h" 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 HOST_LONG_SIZE (HOST_LONG_BITS / 8) 58 59 #define EXCP_INTERRUPT 0x10000 /* async interruption */ 60 #define EXCP_HLT 0x10001 /* hlt instruction reached */ 61 #define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */ 62 #define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */ 63 64 #define TB_JMP_CACHE_BITS 12 65 #define TB_JMP_CACHE_SIZE (1 << TB_JMP_CACHE_BITS) 66 67 /* Only the bottom TB_JMP_PAGE_BITS of the jump cache hash bits vary for 68 addresses on the same page. The top bits are the same. This allows 69 TLB invalidation to quickly clear a subset of the hash table. */ 70 #define TB_JMP_PAGE_BITS (TB_JMP_CACHE_BITS / 2) 71 #define TB_JMP_PAGE_SIZE (1 << TB_JMP_PAGE_BITS) 72 #define TB_JMP_ADDR_MASK (TB_JMP_PAGE_SIZE - 1) 73 #define TB_JMP_PAGE_MASK (TB_JMP_CACHE_SIZE - TB_JMP_PAGE_SIZE) 74 75 #if !defined(CONFIG_USER_ONLY) 76 #define CPU_TLB_BITS 8 77 #define CPU_TLB_SIZE (1 << CPU_TLB_BITS) 78 79 #if HOST_LONG_BITS == 32 && TARGET_LONG_BITS == 32 80 #define CPU_TLB_ENTRY_BITS 4 81 #else 82 #define CPU_TLB_ENTRY_BITS 5 83 #endif 84 85 typedef struct CPUTLBEntry { 86 /* bit TARGET_LONG_BITS to TARGET_PAGE_BITS : virtual address 87 bit TARGET_PAGE_BITS-1..4 : Nonzero for accesses that should not 88 go directly to ram. 89 bit 3 : indicates that the entry is invalid 90 bit 2..0 : zero 91 */ 92 target_ulong addr_read; 93 target_ulong addr_write; 94 target_ulong addr_code; 95 /* Addend to virtual address to get host address. IO accesses 96 use the corresponding iotlb value. */ 97 size_t addend; 98 /* padding to get a power of two size */ 99 uint8_t dummy[(1 << CPU_TLB_ENTRY_BITS) - 100 (sizeof(target_ulong) * 3 + 101 ((-sizeof(target_ulong) * 3) & (sizeof(size_t) - 1)) + 102 sizeof(size_t))]; 103 } CPUTLBEntry; 104 105 extern int CPUTLBEntry_wrong_size[sizeof(CPUTLBEntry) == (1 << CPU_TLB_ENTRY_BITS) ? 1 : -1]; 106 107 #define CPU_COMMON_TLB \ 108 /* The meaning of the MMU modes is defined in the target code. */ \ 109 CPUTLBEntry tlb_table[NB_MMU_MODES][CPU_TLB_SIZE]; \ 110 target_phys_addr_t iotlb[NB_MMU_MODES][CPU_TLB_SIZE]; \ 111 target_ulong tlb_flush_addr; \ 112 target_ulong tlb_flush_mask; 113 114 #else 115 116 #define CPU_COMMON_TLB 117 118 #endif 119 120 121 #ifdef HOST_WORDS_BIGENDIAN 122 typedef struct icount_decr_u16 { 123 uint16_t high; 124 uint16_t low; 125 } icount_decr_u16; 126 #else 127 typedef struct icount_decr_u16 { 128 uint16_t low; 129 uint16_t high; 130 } icount_decr_u16; 131 #endif 132 133 struct kvm_run; 134 struct KVMState; 135 struct qemu_work_item; 136 137 typedef struct CPUBreakpoint { 138 target_ulong pc; 139 int flags; /* BP_* */ 140 QTAILQ_ENTRY(CPUBreakpoint) entry; 141 } CPUBreakpoint; 142 143 typedef struct CPUWatchpoint { 144 target_ulong vaddr; 145 target_ulong len_mask; 146 int flags; /* BP_* */ 147 QTAILQ_ENTRY(CPUWatchpoint) entry; 148 } CPUWatchpoint; 149 150 #define CPU_TEMP_BUF_NLONGS 128 151 #define CPU_COMMON \ 152 struct TranslationBlock *current_tb; /* currently executing TB */ \ 153 /* soft mmu support */ \ 154 /* in order to avoid passing too many arguments to the MMIO \ 155 helpers, we store some rarely used information in the CPU \ 156 context) */ \ 157 unsigned long mem_io_pc; /* host pc at which the memory was \ 158 accessed */ \ 159 target_ulong mem_io_vaddr; /* target virtual addr at which the \ 160 memory was accessed */ \ 161 uint32_t halted; /* Nonzero if the CPU is in suspend state */ \ 162 uint32_t interrupt_request; \ 163 volatile sig_atomic_t exit_request; \ 164 CPU_COMMON_TLB \ 165 struct TranslationBlock *tb_jmp_cache[TB_JMP_CACHE_SIZE]; \ 166 /* buffer for temporaries in the code generator */ \ 167 long temp_buf[CPU_TEMP_BUF_NLONGS]; \ 168 \ 169 int64_t icount_extra; /* Instructions until next timer event. */ \ 170 /* Number of cycles left, with interrupt flag in high bit. \ 171 This allows a single read-compare-cbranch-write sequence to test \ 172 for both decrementer underflow and exceptions. */ \ 173 union { \ 174 uint32_t u32; \ 175 icount_decr_u16 u16; \ 176 } icount_decr; \ 177 uint32_t can_do_io; /* nonzero if memory mapped IO is safe. */ \ 178 \ 179 /* from this point: preserved by CPU reset */ \ 180 /* ice debug support */ \ 181 QTAILQ_HEAD(breakpoints_head, CPUBreakpoint) breakpoints; \ 182 int singlestep_enabled; \ 183 \ 184 QTAILQ_HEAD(watchpoints_head, CPUWatchpoint) watchpoints; \ 185 CPUWatchpoint *watchpoint_hit; \ 186 \ 187 struct GDBRegisterState *gdb_regs; \ 188 \ 189 /* Core interrupt code */ \ 190 jmp_buf jmp_env; \ 191 int exception_index; \ 192 \ 193 CPUState *next_cpu; /* next CPU sharing TB cache */ \ 194 int cpu_index; /* CPU index (informative) */ \ 195 uint32_t host_tid; /* host thread ID */ \ 196 int numa_node; /* NUMA node this cpu is belonging to */ \ 197 int nr_cores; /* number of cores within this CPU package */ \ 198 int nr_threads;/* number of threads within this CPU */ \ 199 int running; /* Nonzero if cpu is currently running(usermode). */ \ 200 /* user data */ \ 201 void *opaque; \ 202 \ 203 uint32_t created; \ 204 uint32_t stop; /* Stop request */ \ 205 uint32_t stopped; /* Artificially stopped */ \ 206 struct QemuThread *thread; \ 207 struct QemuCond *halt_cond; \ 208 struct qemu_work_item *queued_work_first, *queued_work_last; \ 209 const char *cpu_model_str; \ 210 struct KVMState *kvm_state; \ 211 struct kvm_run *kvm_run; \ 212 int kvm_fd; \ 213 int kvm_vcpu_dirty; 214 215 #endif 216
