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 28 /* some important defines: 29 * 30 * WORDS_ALIGNED : if defined, the host cpu can only make word aligned 31 * memory accesses. 32 * 33 * HOST_WORDS_BIGENDIAN : if defined, the host cpu is big endian and 34 * otherwise little endian. 35 * 36 * (TARGET_WORDS_ALIGNED : same for target cpu (not supported yet)) 37 * 38 * TARGET_WORDS_BIGENDIAN : same for target cpu 39 */ 40 41 #if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN) 42 #define BSWAP_NEEDED 43 #endif 44 45 #ifdef BSWAP_NEEDED 46 47 static inline uint16_t tswap16(uint16_t s) 48 { 49 return bswap16(s); 50 } 51 52 static inline uint32_t tswap32(uint32_t s) 53 { 54 return bswap32(s); 55 } 56 57 static inline uint64_t tswap64(uint64_t s) 58 { 59 return bswap64(s); 60 } 61 62 static inline void tswap16s(uint16_t *s) 63 { 64 *s = bswap16(*s); 65 } 66 67 static inline void tswap32s(uint32_t *s) 68 { 69 *s = bswap32(*s); 70 } 71 72 static inline void tswap64s(uint64_t *s) 73 { 74 *s = bswap64(*s); 75 } 76 77 #else 78 79 static inline uint16_t tswap16(uint16_t s) 80 { 81 return s; 82 } 83 84 static inline uint32_t tswap32(uint32_t s) 85 { 86 return s; 87 } 88 89 static inline uint64_t tswap64(uint64_t s) 90 { 91 return s; 92 } 93 94 static inline void tswap16s(uint16_t *s) 95 { 96 } 97 98 static inline void tswap32s(uint32_t *s) 99 { 100 } 101 102 static inline void tswap64s(uint64_t *s) 103 { 104 } 105 106 #endif 107 108 #if TARGET_LONG_SIZE == 4 109 #define tswapl(s) tswap32(s) 110 #define tswapls(s) tswap32s((uint32_t *)(s)) 111 #define bswaptls(s) bswap32s(s) 112 #else 113 #define tswapl(s) tswap64(s) 114 #define tswapls(s) tswap64s((uint64_t *)(s)) 115 #define bswaptls(s) bswap64s(s) 116 #endif 117 118 /* CPU memory access without any memory or io remapping */ 119 120 /* 121 * the generic syntax for the memory accesses is: 122 * 123 * load: ld{type}{sign}{size}{endian}_{access_type}(ptr) 124 * 125 * store: st{type}{size}{endian}_{access_type}(ptr, val) 126 * 127 * type is: 128 * (empty): integer access 129 * f : float access 130 * 131 * sign is: 132 * (empty): for floats or 32 bit size 133 * u : unsigned 134 * s : signed 135 * 136 * size is: 137 * b: 8 bits 138 * w: 16 bits 139 * l: 32 bits 140 * q: 64 bits 141 * 142 * endian is: 143 * (empty): target cpu endianness or 8 bit access 144 * r : reversed target cpu endianness (not implemented yet) 145 * be : big endian (not implemented yet) 146 * le : little endian (not implemented yet) 147 * 148 * access_type is: 149 * raw : host memory access 150 * user : user mode access using soft MMU 151 * kernel : kernel mode access using soft MMU 152 */ 153 154 /* target-endianness CPU memory access functions */ 155 #if defined(TARGET_WORDS_BIGENDIAN) 156 #define lduw_p(p) lduw_be_p(p) 157 #define ldsw_p(p) ldsw_be_p(p) 158 #define ldl_p(p) ldl_be_p(p) 159 #define ldq_p(p) ldq_be_p(p) 160 #define ldfl_p(p) ldfl_be_p(p) 161 #define ldfq_p(p) ldfq_be_p(p) 162 #define stw_p(p, v) stw_be_p(p, v) 163 #define stl_p(p, v) stl_be_p(p, v) 164 #define stq_p(p, v) stq_be_p(p, v) 165 #define stfl_p(p, v) stfl_be_p(p, v) 166 #define stfq_p(p, v) stfq_be_p(p, v) 167 #else 168 #define lduw_p(p) lduw_le_p(p) 169 #define ldsw_p(p) ldsw_le_p(p) 170 #define ldl_p(p) ldl_le_p(p) 171 #define ldq_p(p) ldq_le_p(p) 172 #define ldfl_p(p) ldfl_le_p(p) 173 #define ldfq_p(p) ldfq_le_p(p) 174 #define stw_p(p, v) stw_le_p(p, v) 175 #define stl_p(p, v) stl_le_p(p, v) 176 #define stq_p(p, v) stq_le_p(p, v) 177 #define stfl_p(p, v) stfl_le_p(p, v) 178 #define stfq_p(p, v) stfq_le_p(p, v) 179 #endif 180 181 /* MMU memory access macros */ 182 183 #if defined(CONFIG_USER_ONLY) 184 #include <assert.h> 185 #include "exec/user/abitypes.h" 186 187 /* On some host systems the guest address space is reserved on the host. 188 * This allows the guest address space to be offset to a convenient location. 189 */ 190 #if defined(CONFIG_USE_GUEST_BASE) 191 extern unsigned long guest_base; 192 extern int have_guest_base; 193 extern unsigned long reserved_va; 194 #define GUEST_BASE guest_base 195 #define RESERVED_VA reserved_va 196 #else 197 #define GUEST_BASE 0ul 198 #define RESERVED_VA 0ul 199 #endif 200 201 /* All direct uses of g2h and h2g need to go away for usermode softmmu. */ 202 #define g2h(x) ((void *)((unsigned long)(target_ulong)(x) + GUEST_BASE)) 203 204 #if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS 205 #define h2g_valid(x) 1 206 #else 207 #define h2g_valid(x) ({ \ 208 unsigned long __guest = (unsigned long)(x) - GUEST_BASE; \ 209 (__guest < (1ul << TARGET_VIRT_ADDR_SPACE_BITS)) && \ 210 (!RESERVED_VA || (__guest < RESERVED_VA)); \ 211 }) 212 #endif 213 214 #define h2g_nocheck(x) ({ \ 215 unsigned long __ret = (unsigned long)(x) - GUEST_BASE; \ 216 (abi_ulong)__ret; \ 217 }) 218 219 #define h2g(x) ({ \ 220 /* Check if given address fits target address space */ \ 221 assert(h2g_valid(x)); \ 222 h2g_nocheck(x); \ 223 }) 224 225 #define saddr(x) g2h(x) 226 #define laddr(x) g2h(x) 227 228 #else /* !CONFIG_USER_ONLY */ 229 /* NOTE: we use double casts if pointers and target_ulong have 230 different sizes */ 231 #define saddr(x) (uint8_t *)(intptr_t)(x) 232 #define laddr(x) (uint8_t *)(intptr_t)(x) 233 #endif 234 235 #define ldub_raw(p) ldub_p(laddr((p))) 236 #define ldsb_raw(p) ldsb_p(laddr((p))) 237 #define lduw_raw(p) lduw_p(laddr((p))) 238 #define ldsw_raw(p) ldsw_p(laddr((p))) 239 #define ldl_raw(p) ldl_p(laddr((p))) 240 #define ldq_raw(p) ldq_p(laddr((p))) 241 #define ldfl_raw(p) ldfl_p(laddr((p))) 242 #define ldfq_raw(p) ldfq_p(laddr((p))) 243 #define stb_raw(p, v) stb_p(saddr((p)), v) 244 #define stw_raw(p, v) stw_p(saddr((p)), v) 245 #define stl_raw(p, v) stl_p(saddr((p)), v) 246 #define stq_raw(p, v) stq_p(saddr((p)), v) 247 #define stfl_raw(p, v) stfl_p(saddr((p)), v) 248 #define stfq_raw(p, v) stfq_p(saddr((p)), v) 249 250 251 #if defined(CONFIG_USER_ONLY) 252 253 /* if user mode, no other memory access functions */ 254 #define ldub(p) ldub_raw(p) 255 #define ldsb(p) ldsb_raw(p) 256 #define lduw(p) lduw_raw(p) 257 #define ldsw(p) ldsw_raw(p) 258 #define ldl(p) ldl_raw(p) 259 #define ldq(p) ldq_raw(p) 260 #define ldfl(p) ldfl_raw(p) 261 #define ldfq(p) ldfq_raw(p) 262 #define stb(p, v) stb_raw(p, v) 263 #define stw(p, v) stw_raw(p, v) 264 #define stl(p, v) stl_raw(p, v) 265 #define stq(p, v) stq_raw(p, v) 266 #define stfl(p, v) stfl_raw(p, v) 267 #define stfq(p, v) stfq_raw(p, v) 268 269 #define cpu_ldub_code(env1, p) ldub_raw(p) 270 #define cpu_ldsb_code(env1, p) ldsb_raw(p) 271 #define cpu_lduw_code(env1, p) lduw_raw(p) 272 #define cpu_ldsw_code(env1, p) ldsw_raw(p) 273 #define cpu_ldl_code(env1, p) ldl_raw(p) 274 #define cpu_ldq_code(env1, p) ldq_raw(p) 275 276 #define cpu_ldub_data(env, addr) ldub_raw(addr) 277 #define cpu_lduw_data(env, addr) lduw_raw(addr) 278 #define cpu_ldsw_data(env, addr) ldsw_raw(addr) 279 #define cpu_ldl_data(env, addr) ldl_raw(addr) 280 #define cpu_ldq_data(env, addr) ldq_raw(addr) 281 282 #define cpu_stb_data(env, addr, data) stb_raw(addr, data) 283 #define cpu_stw_data(env, addr, data) stw_raw(addr, data) 284 #define cpu_stl_data(env, addr, data) stl_raw(addr, data) 285 #define cpu_stq_data(env, addr, data) stq_raw(addr, data) 286 287 #define cpu_ldub_kernel(env, addr) ldub_raw(addr) 288 #define cpu_lduw_kernel(env, addr) lduw_raw(addr) 289 #define cpu_ldsw_kernel(env, addr) ldsw_raw(addr) 290 #define cpu_ldl_kernel(env, addr) ldl_raw(addr) 291 #define cpu_ldq_kernel(env, addr) ldq_raw(addr) 292 293 #define cpu_stb_kernel(env, addr, data) stb_raw(addr, data) 294 #define cpu_stw_kernel(env, addr, data) stw_raw(addr, data) 295 #define cpu_stl_kernel(env, addr, data) stl_raw(addr, data) 296 #define cpu_stq_kernel(env, addr, data) stq_raw(addr, data) 297 298 #define ldub_kernel(p) ldub_raw(p) 299 #define ldsb_kernel(p) ldsb_raw(p) 300 #define lduw_kernel(p) lduw_raw(p) 301 #define ldsw_kernel(p) ldsw_raw(p) 302 #define ldl_kernel(p) ldl_raw(p) 303 #define ldq_kernel(p) ldq_raw(p) 304 #define ldfl_kernel(p) ldfl_raw(p) 305 #define ldfq_kernel(p) ldfq_raw(p) 306 #define stb_kernel(p, v) stb_raw(p, v) 307 #define stw_kernel(p, v) stw_raw(p, v) 308 #define stl_kernel(p, v) stl_raw(p, v) 309 #define stq_kernel(p, v) stq_raw(p, v) 310 #define stfl_kernel(p, v) stfl_raw(p, v) 311 #define stfq_kernel(p, vt) stfq_raw(p, v) 312 313 #define cpu_ldub_data(env, addr) ldub_raw(addr) 314 #define cpu_lduw_data(env, addr) lduw_raw(addr) 315 #define cpu_ldl_data(env, addr) ldl_raw(addr) 316 317 #define cpu_stb_data(env, addr, data) stb_raw(addr, data) 318 #define cpu_stw_data(env, addr, data) stw_raw(addr, data) 319 #define cpu_stl_data(env, addr, data) stl_raw(addr, data) 320 #endif /* defined(CONFIG_USER_ONLY) */ 321 322 /* page related stuff */ 323 324 #define TARGET_PAGE_SIZE (1 << TARGET_PAGE_BITS) 325 #define TARGET_PAGE_MASK ~(TARGET_PAGE_SIZE - 1) 326 #define TARGET_PAGE_ALIGN(addr) (((addr) + TARGET_PAGE_SIZE - 1) & TARGET_PAGE_MASK) 327 328 /* ??? These should be the larger of uintptr_t and target_ulong. */ 329 extern uintptr_t qemu_real_host_page_size; 330 extern uintptr_t qemu_host_page_size; 331 extern uintptr_t qemu_host_page_mask; 332 333 #define HOST_PAGE_ALIGN(addr) (((addr) + qemu_host_page_size - 1) & qemu_host_page_mask) 334 335 /* same as PROT_xxx */ 336 #define PAGE_READ 0x0001 337 #define PAGE_WRITE 0x0002 338 #define PAGE_EXEC 0x0004 339 #define PAGE_BITS (PAGE_READ | PAGE_WRITE | PAGE_EXEC) 340 #define PAGE_VALID 0x0008 341 /* original state of the write flag (used when tracking self-modifying 342 code */ 343 #define PAGE_WRITE_ORG 0x0010 344 #if defined(CONFIG_BSD) && defined(CONFIG_USER_ONLY) 345 /* FIXME: Code that sets/uses this is broken and needs to go away. */ 346 #define PAGE_RESERVED 0x0020 347 #endif 348 349 #if defined(CONFIG_USER_ONLY) 350 void page_dump(FILE *f); 351 352 typedef int (*walk_memory_regions_fn)(void *, abi_ulong, 353 abi_ulong, unsigned long); 354 int walk_memory_regions(void *, walk_memory_regions_fn); 355 356 int page_get_flags(target_ulong address); 357 void page_set_flags(target_ulong start, target_ulong end, int flags); 358 int page_check_range(target_ulong start, target_ulong len, int flags); 359 #endif 360 361 CPUArchState *cpu_copy(CPUArchState *env); 362 363 /* Flags for use in ENV->INTERRUPT_PENDING. 364 365 The numbers assigned here are non-sequential in order to preserve 366 binary compatibility with the vmstate dump. Bit 0 (0x0001) was 367 previously used for CPU_INTERRUPT_EXIT, and is cleared when loading 368 the vmstate dump. */ 369 370 /* External hardware interrupt pending. This is typically used for 371 interrupts from devices. */ 372 #define CPU_INTERRUPT_HARD 0x0002 373 374 /* Exit the current TB. This is typically used when some system-level device 375 makes some change to the memory mapping. E.g. the a20 line change. */ 376 #define CPU_INTERRUPT_EXITTB 0x0004 377 378 /* Halt the CPU. */ 379 #define CPU_INTERRUPT_HALT 0x0020 380 381 /* Debug event pending. */ 382 #define CPU_INTERRUPT_DEBUG 0x0080 383 384 /* Several target-specific external hardware interrupts. Each target/cpu.h 385 should define proper names based on these defines. */ 386 #define CPU_INTERRUPT_TGT_EXT_0 0x0008 387 #define CPU_INTERRUPT_TGT_EXT_1 0x0010 388 #define CPU_INTERRUPT_TGT_EXT_2 0x0040 389 #define CPU_INTERRUPT_TGT_EXT_3 0x0200 390 #define CPU_INTERRUPT_TGT_EXT_4 0x1000 391 392 /* Several target-specific internal interrupts. These differ from the 393 preceding target-specific interrupts in that they are intended to 394 originate from within the cpu itself, typically in response to some 395 instruction being executed. These, therefore, are not masked while 396 single-stepping within the debugger. */ 397 #define CPU_INTERRUPT_TGT_INT_0 0x0100 398 #define CPU_INTERRUPT_TGT_INT_1 0x0400 399 #define CPU_INTERRUPT_TGT_INT_2 0x0800 400 #define CPU_INTERRUPT_TGT_INT_3 0x2000 401 402 /* First unused bit: 0x4000. */ 403 404 /* The set of all bits that should be masked when single-stepping. */ 405 #define CPU_INTERRUPT_SSTEP_MASK \ 406 (CPU_INTERRUPT_HARD \ 407 | CPU_INTERRUPT_TGT_EXT_0 \ 408 | CPU_INTERRUPT_TGT_EXT_1 \ 409 | CPU_INTERRUPT_TGT_EXT_2 \ 410 | CPU_INTERRUPT_TGT_EXT_3 \ 411 | CPU_INTERRUPT_TGT_EXT_4) 412 413 #if !defined(CONFIG_USER_ONLY) 414 415 /* memory API */ 416 417 extern ram_addr_t ram_size; 418 419 /* RAM is pre-allocated and passed into qemu_ram_alloc_from_ptr */ 420 #define RAM_PREALLOC_MASK (1 << 0) 421 422 typedef struct RAMBlock { 423 struct MemoryRegion *mr; 424 uint8_t *host; 425 ram_addr_t offset; 426 ram_addr_t length; 427 uint32_t flags; 428 char idstr[256]; 429 /* Reads can take either the iothread or the ramlist lock. 430 * Writes must take both locks. 431 */ 432 QTAILQ_ENTRY(RAMBlock) next; 433 int fd; 434 } RAMBlock; 435 436 typedef struct RAMList { 437 QemuMutex mutex; 438 /* Protected by the iothread lock. */ 439 unsigned long *dirty_memory[DIRTY_MEMORY_NUM]; 440 RAMBlock *mru_block; 441 /* Protected by the ramlist lock. */ 442 QTAILQ_HEAD(, RAMBlock) blocks; 443 uint32_t version; 444 } RAMList; 445 extern RAMList ram_list; 446 447 extern const char *mem_path; 448 extern int mem_prealloc; 449 450 /* Flags stored in the low bits of the TLB virtual address. These are 451 defined so that fast path ram access is all zeros. */ 452 /* Zero if TLB entry is valid. */ 453 #define TLB_INVALID_MASK (1 << 3) 454 /* Set if TLB entry references a clean RAM page. The iotlb entry will 455 contain the page physical address. */ 456 #define TLB_NOTDIRTY (1 << 4) 457 /* Set if TLB entry is an IO callback. */ 458 #define TLB_MMIO (1 << 5) 459 460 void dump_exec_info(FILE *f, fprintf_function cpu_fprintf); 461 ram_addr_t last_ram_offset(void); 462 void qemu_mutex_lock_ramlist(void); 463 void qemu_mutex_unlock_ramlist(void); 464 #endif /* !CONFIG_USER_ONLY */ 465 466 int cpu_memory_rw_debug(CPUState *cpu, target_ulong addr, 467 uint8_t *buf, int len, int is_write); 468 469 #endif /* CPU_ALL_H */ 470