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 2.1 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_ALL_H 21 #define EXEC_ALL_H 22 23 #include "cpu.h" 24 #if defined(CONFIG_USER_ONLY) 25 #include "exec/cpu_ldst.h" 26 #endif 27 #include "exec/translation-block.h" 28 #include "qemu/clang-tsa.h" 29 30 /** 31 * cpu_loop_exit_requested: 32 * @cpu: The CPU state to be tested 33 * 34 * Indicate if somebody asked for a return of the CPU to the main loop 35 * (e.g., via cpu_exit() or cpu_interrupt()). 36 * 37 * This is helpful for architectures that support interruptible 38 * instructions. After writing back all state to registers/memory, this 39 * call can be used to check if it makes sense to return to the main loop 40 * or to continue executing the interruptible instruction. 41 */ 42 static inline bool cpu_loop_exit_requested(CPUState *cpu) 43 { 44 return (int32_t)qatomic_read(&cpu->neg.icount_decr.u32) < 0; 45 } 46 47 #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG) 48 /* cputlb.c */ 49 /** 50 * tlb_init - initialize a CPU's TLB 51 * @cpu: CPU whose TLB should be initialized 52 */ 53 void tlb_init(CPUState *cpu); 54 /** 55 * tlb_destroy - destroy a CPU's TLB 56 * @cpu: CPU whose TLB should be destroyed 57 */ 58 void tlb_destroy(CPUState *cpu); 59 /** 60 * tlb_flush_page: 61 * @cpu: CPU whose TLB should be flushed 62 * @addr: virtual address of page to be flushed 63 * 64 * Flush one page from the TLB of the specified CPU, for all 65 * MMU indexes. 66 */ 67 void tlb_flush_page(CPUState *cpu, vaddr addr); 68 /** 69 * tlb_flush_page_all_cpus: 70 * @cpu: src CPU of the flush 71 * @addr: virtual address of page to be flushed 72 * 73 * Flush one page from the TLB of the specified CPU, for all 74 * MMU indexes. 75 */ 76 void tlb_flush_page_all_cpus(CPUState *src, vaddr addr); 77 /** 78 * tlb_flush_page_all_cpus_synced: 79 * @cpu: src CPU of the flush 80 * @addr: virtual address of page to be flushed 81 * 82 * Flush one page from the TLB of the specified CPU, for all MMU 83 * indexes like tlb_flush_page_all_cpus except the source vCPUs work 84 * is scheduled as safe work meaning all flushes will be complete once 85 * the source vCPUs safe work is complete. This will depend on when 86 * the guests translation ends the TB. 87 */ 88 void tlb_flush_page_all_cpus_synced(CPUState *src, vaddr addr); 89 /** 90 * tlb_flush: 91 * @cpu: CPU whose TLB should be flushed 92 * 93 * Flush the entire TLB for the specified CPU. Most CPU architectures 94 * allow the implementation to drop entries from the TLB at any time 95 * so this is generally safe. If more selective flushing is required 96 * use one of the other functions for efficiency. 97 */ 98 void tlb_flush(CPUState *cpu); 99 /** 100 * tlb_flush_all_cpus: 101 * @cpu: src CPU of the flush 102 */ 103 void tlb_flush_all_cpus(CPUState *src_cpu); 104 /** 105 * tlb_flush_all_cpus_synced: 106 * @cpu: src CPU of the flush 107 * 108 * Like tlb_flush_all_cpus except this except the source vCPUs work is 109 * scheduled as safe work meaning all flushes will be complete once 110 * the source vCPUs safe work is complete. This will depend on when 111 * the guests translation ends the TB. 112 */ 113 void tlb_flush_all_cpus_synced(CPUState *src_cpu); 114 /** 115 * tlb_flush_page_by_mmuidx: 116 * @cpu: CPU whose TLB should be flushed 117 * @addr: virtual address of page to be flushed 118 * @idxmap: bitmap of MMU indexes to flush 119 * 120 * Flush one page from the TLB of the specified CPU, for the specified 121 * MMU indexes. 122 */ 123 void tlb_flush_page_by_mmuidx(CPUState *cpu, vaddr addr, 124 uint16_t idxmap); 125 /** 126 * tlb_flush_page_by_mmuidx_all_cpus: 127 * @cpu: Originating CPU of the flush 128 * @addr: virtual address of page to be flushed 129 * @idxmap: bitmap of MMU indexes to flush 130 * 131 * Flush one page from the TLB of all CPUs, for the specified 132 * MMU indexes. 133 */ 134 void tlb_flush_page_by_mmuidx_all_cpus(CPUState *cpu, vaddr addr, 135 uint16_t idxmap); 136 /** 137 * tlb_flush_page_by_mmuidx_all_cpus_synced: 138 * @cpu: Originating CPU of the flush 139 * @addr: virtual address of page to be flushed 140 * @idxmap: bitmap of MMU indexes to flush 141 * 142 * Flush one page from the TLB of all CPUs, for the specified MMU 143 * indexes like tlb_flush_page_by_mmuidx_all_cpus except the source 144 * vCPUs work is scheduled as safe work meaning all flushes will be 145 * complete once the source vCPUs safe work is complete. This will 146 * depend on when the guests translation ends the TB. 147 */ 148 void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, 149 uint16_t idxmap); 150 /** 151 * tlb_flush_by_mmuidx: 152 * @cpu: CPU whose TLB should be flushed 153 * @wait: If true ensure synchronisation by exiting the cpu_loop 154 * @idxmap: bitmap of MMU indexes to flush 155 * 156 * Flush all entries from the TLB of the specified CPU, for the specified 157 * MMU indexes. 158 */ 159 void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap); 160 /** 161 * tlb_flush_by_mmuidx_all_cpus: 162 * @cpu: Originating CPU of the flush 163 * @idxmap: bitmap of MMU indexes to flush 164 * 165 * Flush all entries from all TLBs of all CPUs, for the specified 166 * MMU indexes. 167 */ 168 void tlb_flush_by_mmuidx_all_cpus(CPUState *cpu, uint16_t idxmap); 169 /** 170 * tlb_flush_by_mmuidx_all_cpus_synced: 171 * @cpu: Originating CPU of the flush 172 * @idxmap: bitmap of MMU indexes to flush 173 * 174 * Flush all entries from all TLBs of all CPUs, for the specified 175 * MMU indexes like tlb_flush_by_mmuidx_all_cpus except except the source 176 * vCPUs work is scheduled as safe work meaning all flushes will be 177 * complete once the source vCPUs safe work is complete. This will 178 * depend on when the guests translation ends the TB. 179 */ 180 void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, uint16_t idxmap); 181 182 /** 183 * tlb_flush_page_bits_by_mmuidx 184 * @cpu: CPU whose TLB should be flushed 185 * @addr: virtual address of page to be flushed 186 * @idxmap: bitmap of mmu indexes to flush 187 * @bits: number of significant bits in address 188 * 189 * Similar to tlb_flush_page_mask, but with a bitmap of indexes. 190 */ 191 void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, vaddr addr, 192 uint16_t idxmap, unsigned bits); 193 194 /* Similarly, with broadcast and syncing. */ 195 void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *cpu, vaddr addr, 196 uint16_t idxmap, unsigned bits); 197 void tlb_flush_page_bits_by_mmuidx_all_cpus_synced 198 (CPUState *cpu, vaddr addr, uint16_t idxmap, unsigned bits); 199 200 /** 201 * tlb_flush_range_by_mmuidx 202 * @cpu: CPU whose TLB should be flushed 203 * @addr: virtual address of the start of the range to be flushed 204 * @len: length of range to be flushed 205 * @idxmap: bitmap of mmu indexes to flush 206 * @bits: number of significant bits in address 207 * 208 * For each mmuidx in @idxmap, flush all pages within [@addr,@addr+@len), 209 * comparing only the low @bits worth of each virtual page. 210 */ 211 void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr, 212 vaddr len, uint16_t idxmap, 213 unsigned bits); 214 215 /* Similarly, with broadcast and syncing. */ 216 void tlb_flush_range_by_mmuidx_all_cpus(CPUState *cpu, vaddr addr, 217 vaddr len, uint16_t idxmap, 218 unsigned bits); 219 void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu, 220 vaddr addr, 221 vaddr len, 222 uint16_t idxmap, 223 unsigned bits); 224 225 /** 226 * tlb_set_page_full: 227 * @cpu: CPU context 228 * @mmu_idx: mmu index of the tlb to modify 229 * @addr: virtual address of the entry to add 230 * @full: the details of the tlb entry 231 * 232 * Add an entry to @cpu tlb index @mmu_idx. All of the fields of 233 * @full must be filled, except for xlat_section, and constitute 234 * the complete description of the translated page. 235 * 236 * This is generally called by the target tlb_fill function after 237 * having performed a successful page table walk to find the physical 238 * address and attributes for the translation. 239 * 240 * At most one entry for a given virtual address is permitted. Only a 241 * single TARGET_PAGE_SIZE region is mapped; @full->lg_page_size is only 242 * used by tlb_flush_page. 243 */ 244 void tlb_set_page_full(CPUState *cpu, int mmu_idx, vaddr addr, 245 CPUTLBEntryFull *full); 246 247 /** 248 * tlb_set_page_with_attrs: 249 * @cpu: CPU to add this TLB entry for 250 * @addr: virtual address of page to add entry for 251 * @paddr: physical address of the page 252 * @attrs: memory transaction attributes 253 * @prot: access permissions (PAGE_READ/PAGE_WRITE/PAGE_EXEC bits) 254 * @mmu_idx: MMU index to insert TLB entry for 255 * @size: size of the page in bytes 256 * 257 * Add an entry to this CPU's TLB (a mapping from virtual address 258 * @addr to physical address @paddr) with the specified memory 259 * transaction attributes. This is generally called by the target CPU 260 * specific code after it has been called through the tlb_fill() 261 * entry point and performed a successful page table walk to find 262 * the physical address and attributes for the virtual address 263 * which provoked the TLB miss. 264 * 265 * At most one entry for a given virtual address is permitted. Only a 266 * single TARGET_PAGE_SIZE region is mapped; the supplied @size is only 267 * used by tlb_flush_page. 268 */ 269 void tlb_set_page_with_attrs(CPUState *cpu, vaddr addr, 270 hwaddr paddr, MemTxAttrs attrs, 271 int prot, int mmu_idx, vaddr size); 272 /* tlb_set_page: 273 * 274 * This function is equivalent to calling tlb_set_page_with_attrs() 275 * with an @attrs argument of MEMTXATTRS_UNSPECIFIED. It's provided 276 * as a convenience for CPUs which don't use memory transaction attributes. 277 */ 278 void tlb_set_page(CPUState *cpu, vaddr addr, 279 hwaddr paddr, int prot, 280 int mmu_idx, vaddr size); 281 #else 282 static inline void tlb_init(CPUState *cpu) 283 { 284 } 285 static inline void tlb_destroy(CPUState *cpu) 286 { 287 } 288 static inline void tlb_flush_page(CPUState *cpu, vaddr addr) 289 { 290 } 291 static inline void tlb_flush_page_all_cpus(CPUState *src, vaddr addr) 292 { 293 } 294 static inline void tlb_flush_page_all_cpus_synced(CPUState *src, vaddr addr) 295 { 296 } 297 static inline void tlb_flush(CPUState *cpu) 298 { 299 } 300 static inline void tlb_flush_all_cpus(CPUState *src_cpu) 301 { 302 } 303 static inline void tlb_flush_all_cpus_synced(CPUState *src_cpu) 304 { 305 } 306 static inline void tlb_flush_page_by_mmuidx(CPUState *cpu, 307 vaddr addr, uint16_t idxmap) 308 { 309 } 310 311 static inline void tlb_flush_by_mmuidx(CPUState *cpu, uint16_t idxmap) 312 { 313 } 314 static inline void tlb_flush_page_by_mmuidx_all_cpus(CPUState *cpu, 315 vaddr addr, 316 uint16_t idxmap) 317 { 318 } 319 static inline void tlb_flush_page_by_mmuidx_all_cpus_synced(CPUState *cpu, 320 vaddr addr, 321 uint16_t idxmap) 322 { 323 } 324 static inline void tlb_flush_by_mmuidx_all_cpus(CPUState *cpu, uint16_t idxmap) 325 { 326 } 327 328 static inline void tlb_flush_by_mmuidx_all_cpus_synced(CPUState *cpu, 329 uint16_t idxmap) 330 { 331 } 332 static inline void tlb_flush_page_bits_by_mmuidx(CPUState *cpu, 333 vaddr addr, 334 uint16_t idxmap, 335 unsigned bits) 336 { 337 } 338 static inline void tlb_flush_page_bits_by_mmuidx_all_cpus(CPUState *cpu, 339 vaddr addr, 340 uint16_t idxmap, 341 unsigned bits) 342 { 343 } 344 static inline void 345 tlb_flush_page_bits_by_mmuidx_all_cpus_synced(CPUState *cpu, vaddr addr, 346 uint16_t idxmap, unsigned bits) 347 { 348 } 349 static inline void tlb_flush_range_by_mmuidx(CPUState *cpu, vaddr addr, 350 vaddr len, uint16_t idxmap, 351 unsigned bits) 352 { 353 } 354 static inline void tlb_flush_range_by_mmuidx_all_cpus(CPUState *cpu, 355 vaddr addr, 356 vaddr len, 357 uint16_t idxmap, 358 unsigned bits) 359 { 360 } 361 static inline void tlb_flush_range_by_mmuidx_all_cpus_synced(CPUState *cpu, 362 vaddr addr, 363 vaddr len, 364 uint16_t idxmap, 365 unsigned bits) 366 { 367 } 368 #endif 369 /** 370 * probe_access: 371 * @env: CPUArchState 372 * @addr: guest virtual address to look up 373 * @size: size of the access 374 * @access_type: read, write or execute permission 375 * @mmu_idx: MMU index to use for lookup 376 * @retaddr: return address for unwinding 377 * 378 * Look up the guest virtual address @addr. Raise an exception if the 379 * page does not satisfy @access_type. Raise an exception if the 380 * access (@addr, @size) hits a watchpoint. For writes, mark a clean 381 * page as dirty. 382 * 383 * Finally, return the host address for a page that is backed by RAM, 384 * or NULL if the page requires I/O. 385 */ 386 void *probe_access(CPUArchState *env, vaddr addr, int size, 387 MMUAccessType access_type, int mmu_idx, uintptr_t retaddr); 388 389 static inline void *probe_write(CPUArchState *env, vaddr addr, int size, 390 int mmu_idx, uintptr_t retaddr) 391 { 392 return probe_access(env, addr, size, MMU_DATA_STORE, mmu_idx, retaddr); 393 } 394 395 static inline void *probe_read(CPUArchState *env, vaddr addr, int size, 396 int mmu_idx, uintptr_t retaddr) 397 { 398 return probe_access(env, addr, size, MMU_DATA_LOAD, mmu_idx, retaddr); 399 } 400 401 /** 402 * probe_access_flags: 403 * @env: CPUArchState 404 * @addr: guest virtual address to look up 405 * @size: size of the access 406 * @access_type: read, write or execute permission 407 * @mmu_idx: MMU index to use for lookup 408 * @nonfault: suppress the fault 409 * @phost: return value for host address 410 * @retaddr: return address for unwinding 411 * 412 * Similar to probe_access, loosely returning the TLB_FLAGS_MASK for 413 * the page, and storing the host address for RAM in @phost. 414 * 415 * If @nonfault is set, do not raise an exception but return TLB_INVALID_MASK. 416 * Do not handle watchpoints, but include TLB_WATCHPOINT in the returned flags. 417 * Do handle clean pages, so exclude TLB_NOTDIRY from the returned flags. 418 * For simplicity, all "mmio-like" flags are folded to TLB_MMIO. 419 */ 420 int probe_access_flags(CPUArchState *env, vaddr addr, int size, 421 MMUAccessType access_type, int mmu_idx, 422 bool nonfault, void **phost, uintptr_t retaddr); 423 424 #ifndef CONFIG_USER_ONLY 425 /** 426 * probe_access_full: 427 * Like probe_access_flags, except also return into @pfull. 428 * 429 * The CPUTLBEntryFull structure returned via @pfull is transient 430 * and must be consumed or copied immediately, before any further 431 * access or changes to TLB @mmu_idx. 432 */ 433 int probe_access_full(CPUArchState *env, vaddr addr, int size, 434 MMUAccessType access_type, int mmu_idx, 435 bool nonfault, void **phost, 436 CPUTLBEntryFull **pfull, uintptr_t retaddr); 437 438 /** 439 * probe_access_mmu() - Like probe_access_full except cannot fault and 440 * doesn't trigger instrumentation. 441 * 442 * @env: CPUArchState 443 * @vaddr: virtual address to probe 444 * @size: size of the probe 445 * @access_type: read, write or execute permission 446 * @mmu_idx: softmmu index 447 * @phost: ptr to return value host address or NULL 448 * @pfull: ptr to return value CPUTLBEntryFull structure or NULL 449 * 450 * The CPUTLBEntryFull structure returned via @pfull is transient 451 * and must be consumed or copied immediately, before any further 452 * access or changes to TLB @mmu_idx. 453 * 454 * Returns: TLB flags as per probe_access_flags() 455 */ 456 int probe_access_full_mmu(CPUArchState *env, vaddr addr, int size, 457 MMUAccessType access_type, int mmu_idx, 458 void **phost, CPUTLBEntryFull **pfull); 459 460 #endif 461 462 /* Hide the qatomic_read to make code a little easier on the eyes */ 463 static inline uint32_t tb_cflags(const TranslationBlock *tb) 464 { 465 return qatomic_read(&tb->cflags); 466 } 467 468 static inline tb_page_addr_t tb_page_addr0(const TranslationBlock *tb) 469 { 470 #ifdef CONFIG_USER_ONLY 471 return tb->itree.start; 472 #else 473 return tb->page_addr[0]; 474 #endif 475 } 476 477 static inline tb_page_addr_t tb_page_addr1(const TranslationBlock *tb) 478 { 479 #ifdef CONFIG_USER_ONLY 480 tb_page_addr_t next = tb->itree.last & TARGET_PAGE_MASK; 481 return next == (tb->itree.start & TARGET_PAGE_MASK) ? -1 : next; 482 #else 483 return tb->page_addr[1]; 484 #endif 485 } 486 487 static inline void tb_set_page_addr0(TranslationBlock *tb, 488 tb_page_addr_t addr) 489 { 490 #ifdef CONFIG_USER_ONLY 491 tb->itree.start = addr; 492 /* 493 * To begin, we record an interval of one byte. When the translation 494 * loop encounters a second page, the interval will be extended to 495 * include the first byte of the second page, which is sufficient to 496 * allow tb_page_addr1() above to work properly. The final corrected 497 * interval will be set by tb_page_add() from tb->size before the 498 * node is added to the interval tree. 499 */ 500 tb->itree.last = addr; 501 #else 502 tb->page_addr[0] = addr; 503 #endif 504 } 505 506 static inline void tb_set_page_addr1(TranslationBlock *tb, 507 tb_page_addr_t addr) 508 { 509 #ifdef CONFIG_USER_ONLY 510 /* Extend the interval to the first byte of the second page. See above. */ 511 tb->itree.last = addr; 512 #else 513 tb->page_addr[1] = addr; 514 #endif 515 } 516 517 /* current cflags for hashing/comparison */ 518 uint32_t curr_cflags(CPUState *cpu); 519 520 /* TranslationBlock invalidate API */ 521 void tb_phys_invalidate(TranslationBlock *tb, tb_page_addr_t page_addr); 522 void tb_invalidate_phys_range(tb_page_addr_t start, tb_page_addr_t last); 523 void tb_set_jmp_target(TranslationBlock *tb, int n, uintptr_t addr); 524 525 /* GETPC is the true target of the return instruction that we'll execute. */ 526 #if defined(CONFIG_TCG_INTERPRETER) 527 extern __thread uintptr_t tci_tb_ptr; 528 # define GETPC() tci_tb_ptr 529 #else 530 # define GETPC() \ 531 ((uintptr_t)__builtin_extract_return_addr(__builtin_return_address(0))) 532 #endif 533 534 /* The true return address will often point to a host insn that is part of 535 the next translated guest insn. Adjust the address backward to point to 536 the middle of the call insn. Subtracting one would do the job except for 537 several compressed mode architectures (arm, mips) which set the low bit 538 to indicate the compressed mode; subtracting two works around that. It 539 is also the case that there are no host isas that contain a call insn 540 smaller than 4 bytes, so we don't worry about special-casing this. */ 541 #define GETPC_ADJ 2 542 543 #if !defined(CONFIG_USER_ONLY) 544 545 /** 546 * iotlb_to_section: 547 * @cpu: CPU performing the access 548 * @index: TCG CPU IOTLB entry 549 * 550 * Given a TCG CPU IOTLB entry, return the MemoryRegionSection that 551 * it refers to. @index will have been initially created and returned 552 * by memory_region_section_get_iotlb(). 553 */ 554 struct MemoryRegionSection *iotlb_to_section(CPUState *cpu, 555 hwaddr index, MemTxAttrs attrs); 556 #endif 557 558 /** 559 * get_page_addr_code_hostp() 560 * @env: CPUArchState 561 * @addr: guest virtual address of guest code 562 * 563 * See get_page_addr_code() (full-system version) for documentation on the 564 * return value. 565 * 566 * Sets *@hostp (when @hostp is non-NULL) as follows. 567 * If the return value is -1, sets *@hostp to NULL. Otherwise, sets *@hostp 568 * to the host address where @addr's content is kept. 569 * 570 * Note: this function can trigger an exception. 571 */ 572 tb_page_addr_t get_page_addr_code_hostp(CPUArchState *env, vaddr addr, 573 void **hostp); 574 575 /** 576 * get_page_addr_code() 577 * @env: CPUArchState 578 * @addr: guest virtual address of guest code 579 * 580 * If we cannot translate and execute from the entire RAM page, or if 581 * the region is not backed by RAM, returns -1. Otherwise, returns the 582 * ram_addr_t corresponding to the guest code at @addr. 583 * 584 * Note: this function can trigger an exception. 585 */ 586 static inline tb_page_addr_t get_page_addr_code(CPUArchState *env, 587 vaddr addr) 588 { 589 return get_page_addr_code_hostp(env, addr, NULL); 590 } 591 592 #if defined(CONFIG_USER_ONLY) 593 void TSA_NO_TSA mmap_lock(void); 594 void TSA_NO_TSA mmap_unlock(void); 595 bool have_mmap_lock(void); 596 597 static inline void mmap_unlock_guard(void *unused) 598 { 599 mmap_unlock(); 600 } 601 602 #define WITH_MMAP_LOCK_GUARD() \ 603 for (int _mmap_lock_iter __attribute__((cleanup(mmap_unlock_guard))) \ 604 = (mmap_lock(), 0); _mmap_lock_iter == 0; _mmap_lock_iter = 1) 605 606 /** 607 * adjust_signal_pc: 608 * @pc: raw pc from the host signal ucontext_t. 609 * @is_write: host memory operation was write, or read-modify-write. 610 * 611 * Alter @pc as required for unwinding. Return the type of the 612 * guest memory access -- host reads may be for guest execution. 613 */ 614 MMUAccessType adjust_signal_pc(uintptr_t *pc, bool is_write); 615 616 /** 617 * handle_sigsegv_accerr_write: 618 * @cpu: the cpu context 619 * @old_set: the sigset_t from the signal ucontext_t 620 * @host_pc: the host pc, adjusted for the signal 621 * @host_addr: the host address of the fault 622 * 623 * Return true if the write fault has been handled, and should be re-tried. 624 */ 625 bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set, 626 uintptr_t host_pc, abi_ptr guest_addr); 627 628 /** 629 * cpu_loop_exit_sigsegv: 630 * @cpu: the cpu context 631 * @addr: the guest address of the fault 632 * @access_type: access was read/write/execute 633 * @maperr: true for invalid page, false for permission fault 634 * @ra: host pc for unwinding 635 * 636 * Use the TCGCPUOps hook to record cpu state, do guest operating system 637 * specific things to raise SIGSEGV, and jump to the main cpu loop. 638 */ 639 G_NORETURN void cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr, 640 MMUAccessType access_type, 641 bool maperr, uintptr_t ra); 642 643 /** 644 * cpu_loop_exit_sigbus: 645 * @cpu: the cpu context 646 * @addr: the guest address of the alignment fault 647 * @access_type: access was read/write/execute 648 * @ra: host pc for unwinding 649 * 650 * Use the TCGCPUOps hook to record cpu state, do guest operating system 651 * specific things to raise SIGBUS, and jump to the main cpu loop. 652 */ 653 G_NORETURN void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr, 654 MMUAccessType access_type, 655 uintptr_t ra); 656 657 #else 658 static inline void mmap_lock(void) {} 659 static inline void mmap_unlock(void) {} 660 #define WITH_MMAP_LOCK_GUARD() 661 662 void tlb_reset_dirty(CPUState *cpu, ram_addr_t start1, ram_addr_t length); 663 void tlb_set_dirty(CPUState *cpu, vaddr addr); 664 665 MemoryRegionSection * 666 address_space_translate_for_iotlb(CPUState *cpu, int asidx, hwaddr addr, 667 hwaddr *xlat, hwaddr *plen, 668 MemTxAttrs attrs, int *prot); 669 hwaddr memory_region_section_get_iotlb(CPUState *cpu, 670 MemoryRegionSection *section); 671 #endif 672 673 #endif 674