1 /* 2 * defines common to all virtual 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_ALL_H 20 #define CPU_ALL_H 21 22 #include "qemu-common.h" 23 #include "exec/cpu-common.h" 24 #include "exec/memory.h" 25 #include "qemu/thread.h" 26 #include "qom/cpu.h" 27 #include "qemu/rcu.h" 28 29 #define EXCP_INTERRUPT 0x10000 /* async interruption */ 30 #define EXCP_HLT 0x10001 /* hlt instruction reached */ 31 #define EXCP_DEBUG 0x10002 /* cpu stopped after a breakpoint or singlestep */ 32 #define EXCP_HALTED 0x10003 /* cpu is halted (waiting for external event) */ 33 #define EXCP_YIELD 0x10004 /* cpu wants to yield timeslice to another */ 34 #define EXCP_ATOMIC 0x10005 /* stop-the-world and emulate atomic */ 35 36 /* some important defines: 37 * 38 * HOST_WORDS_BIGENDIAN : if defined, the host cpu is big endian and 39 * otherwise little endian. 40 * 41 * TARGET_WORDS_BIGENDIAN : same for target cpu 42 */ 43 44 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 45 #define BSWAP_NEEDED 46 #endif 47 48 #ifdef BSWAP_NEEDED 49 50 static inline uint16_t tswap16(uint16_t s) 51 { 52 return bswap16(s); 53 } 54 55 static inline uint32_t tswap32(uint32_t s) 56 { 57 return bswap32(s); 58 } 59 60 static inline uint64_t tswap64(uint64_t s) 61 { 62 return bswap64(s); 63 } 64 65 static inline void tswap16s(uint16_t *s) 66 { 67 *s = bswap16(*s); 68 } 69 70 static inline void tswap32s(uint32_t *s) 71 { 72 *s = bswap32(*s); 73 } 74 75 static inline void tswap64s(uint64_t *s) 76 { 77 *s = bswap64(*s); 78 } 79 80 #else 81 82 static inline uint16_t tswap16(uint16_t s) 83 { 84 return s; 85 } 86 87 static inline uint32_t tswap32(uint32_t s) 88 { 89 return s; 90 } 91 92 static inline uint64_t tswap64(uint64_t s) 93 { 94 return s; 95 } 96 97 static inline void tswap16s(uint16_t *s) 98 { 99 } 100 101 static inline void tswap32s(uint32_t *s) 102 { 103 } 104 105 static inline void tswap64s(uint64_t *s) 106 { 107 } 108 109 #endif 110 111 #if TARGET_LONG_SIZE == 4 112 #define tswapl(s) tswap32(s) 113 #define tswapls(s) tswap32s((uint32_t *)(s)) 114 #define bswaptls(s) bswap32s(s) 115 #else 116 #define tswapl(s) tswap64(s) 117 #define tswapls(s) tswap64s((uint64_t *)(s)) 118 #define bswaptls(s) bswap64s(s) 119 #endif 120 121 /* Target-endianness CPU memory access functions. These fit into the 122 * {ld,st}{type}{sign}{size}{endian}_p naming scheme described in bswap.h. 123 */ 124 #if defined(TARGET_WORDS_BIGENDIAN) 125 #define lduw_p(p) lduw_be_p(p) 126 #define ldsw_p(p) ldsw_be_p(p) 127 #define ldl_p(p) ldl_be_p(p) 128 #define ldq_p(p) ldq_be_p(p) 129 #define ldfl_p(p) ldfl_be_p(p) 130 #define ldfq_p(p) ldfq_be_p(p) 131 #define stw_p(p, v) stw_be_p(p, v) 132 #define stl_p(p, v) stl_be_p(p, v) 133 #define stq_p(p, v) stq_be_p(p, v) 134 #define stfl_p(p, v) stfl_be_p(p, v) 135 #define stfq_p(p, v) stfq_be_p(p, v) 136 #else 137 #define lduw_p(p) lduw_le_p(p) 138 #define ldsw_p(p) ldsw_le_p(p) 139 #define ldl_p(p) ldl_le_p(p) 140 #define ldq_p(p) ldq_le_p(p) 141 #define ldfl_p(p) ldfl_le_p(p) 142 #define ldfq_p(p) ldfq_le_p(p) 143 #define stw_p(p, v) stw_le_p(p, v) 144 #define stl_p(p, v) stl_le_p(p, v) 145 #define stq_p(p, v) stq_le_p(p, v) 146 #define stfl_p(p, v) stfl_le_p(p, v) 147 #define stfq_p(p, v) stfq_le_p(p, v) 148 #endif 149 150 /* MMU memory access macros */ 151 152 #if defined(CONFIG_USER_ONLY) 153 #include "exec/user/abitypes.h" 154 155 /* On some host systems the guest address space is reserved on the host. 156 * This allows the guest address space to be offset to a convenient location. 157 */ 158 extern unsigned long guest_base; 159 extern int have_guest_base; 160 extern unsigned long reserved_va; 161 162 #define GUEST_ADDR_MAX (reserved_va ? reserved_va : \ 163 (1ul << TARGET_VIRT_ADDR_SPACE_BITS) - 1) 164 #else 165 166 #include "exec/hwaddr.h" 167 uint32_t lduw_phys(AddressSpace *as, hwaddr addr); 168 uint32_t ldl_phys(AddressSpace *as, hwaddr addr); 169 uint64_t ldq_phys(AddressSpace *as, hwaddr addr); 170 void stl_phys_notdirty(AddressSpace *as, hwaddr addr, uint32_t val); 171 void stw_phys(AddressSpace *as, hwaddr addr, uint32_t val); 172 void stl_phys(AddressSpace *as, hwaddr addr, uint32_t val); 173 void stq_phys(AddressSpace *as, hwaddr addr, uint64_t val); 174 175 uint32_t address_space_lduw(AddressSpace *as, hwaddr addr, 176 MemTxAttrs attrs, MemTxResult *result); 177 uint32_t address_space_ldl(AddressSpace *as, hwaddr addr, 178 MemTxAttrs attrs, MemTxResult *result); 179 uint64_t address_space_ldq(AddressSpace *as, hwaddr addr, 180 MemTxAttrs attrs, MemTxResult *result); 181 void address_space_stl_notdirty(AddressSpace *as, hwaddr addr, uint32_t val, 182 MemTxAttrs attrs, MemTxResult *result); 183 void address_space_stw(AddressSpace *as, hwaddr addr, uint32_t val, 184 MemTxAttrs attrs, MemTxResult *result); 185 void address_space_stl(AddressSpace *as, hwaddr addr, uint32_t val, 186 MemTxAttrs attrs, MemTxResult *result); 187 void address_space_stq(AddressSpace *as, hwaddr addr, uint64_t val, 188 MemTxAttrs attrs, MemTxResult *result); 189 #endif 190 191 /* page related stuff */ 192 193 #ifdef TARGET_PAGE_BITS_VARY 194 extern bool target_page_bits_decided; 195 extern int target_page_bits; 196 #define TARGET_PAGE_BITS ({ assert(target_page_bits_decided); \ 197 target_page_bits; }) 198 #else 199 #define TARGET_PAGE_BITS_MIN TARGET_PAGE_BITS 200 #endif 201 202 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS) 203 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1) 204 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK) 205 206 /* Using intptr_t ensures that qemu_*_page_mask is sign-extended even 207 * when intptr_t is 32-bit and we are aligning a long long. 208 */ 209 extern uintptr_t qemu_real_host_page_size; 210 extern intptr_t qemu_real_host_page_mask; 211 extern uintptr_t qemu_host_page_size; 212 extern intptr_t qemu_host_page_mask; 213 214 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask) 215 #define REAL_HOST_PAGE_ALIGN(addr) (((addr) + qemu_real_host_page_size - 1) & \ 216 qemu_real_host_page_mask) 217 218 /* same as PROT_xxx */ 219 #define PAGE_READ 0x0001 220 #define PAGE_WRITE 0x0002 221 #define PAGE_EXEC 0x0004 222 #define PAGE_BITS (PAGE_READ | PAGE_WRITE | PAGE_EXEC) 223 #define PAGE_VALID 0x0008 224 /* original state of the write flag (used when tracking self-modifying 225 code */ 226 #define PAGE_WRITE_ORG 0x0010 227 #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) 228 /* FIXME: Code that sets/uses this is broken and needs to go away. */ 229 #define PAGE_RESERVED 0x0020 230 #endif 231 232 #if defined(CONFIG_USER_ONLY) 233 void page_dump(FILE *f); 234 235 typedef int (*walk_memory_regions_fn)(void *, target_ulong, 236 target_ulong, unsigned long); 237 int walk_memory_regions(void *, walk_memory_regions_fn); 238 239 int page_get_flags(target_ulong address); 240 void page_set_flags(target_ulong start, target_ulong end, int flags); 241 int page_check_range(target_ulong start, target_ulong len, int flags); 242 #endif 243 244 CPUArchState *cpu_copy(CPUArchState *env); 245 246 /* Flags for use in ENV->INTERRUPT_PENDING. 247 248 The numbers assigned here are non-sequential in order to preserve 249 binary compatibility with the vmstate dump. Bit 0 (0x0001) was 250 previously used for CPU_INTERRUPT_EXIT, and is cleared when loading 251 the vmstate dump. */ 252 253 /* External hardware interrupt pending. This is typically used for 254 interrupts from devices. */ 255 #define CPU_INTERRUPT_HARD 0x0002 256 257 /* Exit the current TB. This is typically used when some system-level device 258 makes some change to the memory mapping. E.g. the a20 line change. */ 259 #define CPU_INTERRUPT_EXITTB 0x0004 260 261 /* Halt the CPU. */ 262 #define CPU_INTERRUPT_HALT 0x0020 263 264 /* Debug event pending. */ 265 #define CPU_INTERRUPT_DEBUG 0x0080 266 267 /* Reset signal. */ 268 #define CPU_INTERRUPT_RESET 0x0400 269 270 /* Several target-specific external hardware interrupts. Each target/cpu.h 271 should define proper names based on these defines. */ 272 #define CPU_INTERRUPT_TGT_EXT_0 0x0008 273 #define CPU_INTERRUPT_TGT_EXT_1 0x0010 274 #define CPU_INTERRUPT_TGT_EXT_2 0x0040 275 #define CPU_INTERRUPT_TGT_EXT_3 0x0200 276 #define CPU_INTERRUPT_TGT_EXT_4 0x1000 277 278 /* Several target-specific internal interrupts. These differ from the 279 preceding target-specific interrupts in that they are intended to 280 originate from within the cpu itself, typically in response to some 281 instruction being executed. These, therefore, are not masked while 282 single-stepping within the debugger. */ 283 #define CPU_INTERRUPT_TGT_INT_0 0x0100 284 #define CPU_INTERRUPT_TGT_INT_1 0x0800 285 #define CPU_INTERRUPT_TGT_INT_2 0x2000 286 287 /* First unused bit: 0x4000. */ 288 289 /* The set of all bits that should be masked when single-stepping. */ 290 #define CPU_INTERRUPT_SSTEP_MASK \ 291 (CPU_INTERRUPT_HARD \ 292 | CPU_INTERRUPT_TGT_EXT_0 \ 293 | CPU_INTERRUPT_TGT_EXT_1 \ 294 | CPU_INTERRUPT_TGT_EXT_2 \ 295 | CPU_INTERRUPT_TGT_EXT_3 \ 296 | CPU_INTERRUPT_TGT_EXT_4) 297 298 #if !defined(CONFIG_USER_ONLY) 299 300 /* Flags stored in the low bits of the TLB virtual address. These are 301 * defined so that fast path ram access is all zeros. 302 * The flags all must be between TARGET_PAGE_BITS and 303 * maximum address alignment bit. 304 */ 305 /* Zero if TLB entry is valid. */ 306 #define TLB_INVALID_MASK (1 << (TARGET_PAGE_BITS - 1)) 307 /* Set if TLB entry references a clean RAM page. The iotlb entry will 308 contain the page physical address. */ 309 #define TLB_NOTDIRTY (1 << (TARGET_PAGE_BITS - 2)) 310 /* Set if TLB entry is an IO callback. */ 311 #define TLB_MMIO (1 << (TARGET_PAGE_BITS - 3)) 312 313 /* Use this mask to check interception with an alignment mask 314 * in a TCG backend. 315 */ 316 #define TLB_FLAGS_MASK (TLB_INVALID_MASK | TLB_NOTDIRTY | TLB_MMIO) 317 318 void dump_exec_info(FILE *f, fprintf_function cpu_fprintf); 319 void dump_opcount_info(FILE *f, fprintf_function cpu_fprintf); 320 #endif /* !CONFIG_USER_ONLY */ 321 322 int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, 323 uint8_t *buf, int len, int is_write); 324 325 int cpu_exec(CPUState *cpu); 326 327 #endif /* CPU_ALL_H */ 328