1 2 /*--------------------------------------------------------------------*/ 3 /*--- A header file for all parts of the MemCheck tool. ---*/ 4 /*--- mc_include.h ---*/ 5 /*--------------------------------------------------------------------*/ 6 7 /* 8 This file is part of MemCheck, a heavyweight Valgrind tool for 9 detecting memory errors. 10 11 Copyright (C) 2000-2015 Julian Seward 12 jseward (at) acm.org 13 14 This program is free software; you can redistribute it and/or 15 modify it under the terms of the GNU General Public License as 16 published by the Free Software Foundation; either version 2 of the 17 License, or (at your option) any later version. 18 19 This program is distributed in the hope that it will be useful, but 20 WITHOUT ANY WARRANTY; without even the implied warranty of 21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 22 General Public License for more details. 23 24 You should have received a copy of the GNU General Public License 25 along with this program; if not, write to the Free Software 26 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 27 02111-1307, USA. 28 29 The GNU General Public License is contained in the file COPYING. 30 */ 31 32 #ifndef __MC_INCLUDE_H 33 #define __MC_INCLUDE_H 34 35 #define MC_(str) VGAPPEND(vgMemCheck_,str) 36 37 38 /* This is a private header file for use only within the 39 memcheck/ directory. */ 40 41 /*------------------------------------------------------------*/ 42 /*--- Tracking the heap ---*/ 43 /*------------------------------------------------------------*/ 44 45 /* By default, we want at least a 16B redzone on client heap blocks 46 for Memcheck. 47 The default can be modified by --redzone-size. */ 48 #define MC_MALLOC_DEFAULT_REDZONE_SZB 16 49 // effective redzone, as (possibly) modified by --redzone-size: 50 extern SizeT MC_(Malloc_Redzone_SzB); 51 52 /* For malloc()/new/new[] vs. free()/delete/delete[] mismatch checking. */ 53 typedef 54 enum { 55 MC_AllocMalloc = 0, 56 MC_AllocNew = 1, 57 MC_AllocNewVec = 2, 58 MC_AllocCustom = 3 59 } 60 MC_AllocKind; 61 62 /* This describes a heap block. Nb: first two fields must match core's 63 * VgHashNode. */ 64 typedef 65 struct _MC_Chunk { 66 struct _MC_Chunk* next; 67 Addr data; // Address of the actual block. 68 SizeT szB : (sizeof(SizeT)*8)-2; // Size requested; 30 or 62 bits. 69 MC_AllocKind allockind : 2; // Which operation did the allocation. 70 ExeContext* where[0]; 71 /* Variable-length array. The size depends on MC_(clo_keep_stacktraces). 72 This array optionally stores the alloc and/or free stack trace. */ 73 } 74 MC_Chunk; 75 76 /* Returns the execontext where the MC_Chunk was allocated/freed. 77 Returns VG_(null_ExeContext)() if the execontext has not been recorded (due 78 to MC_(clo_keep_stacktraces) and/or because block not yet freed). */ 79 ExeContext* MC_(allocated_at) (MC_Chunk*); 80 ExeContext* MC_(freed_at) (MC_Chunk*); 81 82 /* Records and sets execontext according to MC_(clo_keep_stacktraces) */ 83 void MC_(set_allocated_at) (ThreadId, MC_Chunk*); 84 void MC_(set_freed_at) (ThreadId, MC_Chunk*); 85 86 /* number of pointers needed according to MC_(clo_keep_stacktraces). */ 87 UInt MC_(n_where_pointers) (void); 88 89 /* Memory pool. Nb: first two fields must match core's VgHashNode. */ 90 typedef 91 struct _MC_Mempool { 92 struct _MC_Mempool* next; 93 Addr pool; // pool identifier 94 SizeT rzB; // pool red-zone size 95 Bool is_zeroed; // allocations from this pool are zeroed 96 VgHashTable *chunks; // chunks associated with this pool 97 } 98 MC_Mempool; 99 100 101 void* MC_(new_block) ( ThreadId tid, 102 Addr p, SizeT size, SizeT align, 103 Bool is_zeroed, MC_AllocKind kind, 104 VgHashTable *table); 105 void MC_(handle_free) ( ThreadId tid, 106 Addr p, UInt rzB, MC_AllocKind kind ); 107 108 void MC_(create_mempool) ( Addr pool, UInt rzB, Bool is_zeroed ); 109 void MC_(destroy_mempool) ( Addr pool ); 110 void MC_(mempool_alloc) ( ThreadId tid, Addr pool, 111 Addr addr, SizeT size ); 112 void MC_(mempool_free) ( Addr pool, Addr addr ); 113 void MC_(mempool_trim) ( Addr pool, Addr addr, SizeT size ); 114 void MC_(move_mempool) ( Addr poolA, Addr poolB ); 115 void MC_(mempool_change) ( Addr pool, Addr addrA, Addr addrB, SizeT size ); 116 Bool MC_(mempool_exists) ( Addr pool ); 117 118 /* Searches for a recently freed block which might bracket Addr a. 119 Return the MC_Chunk* for this block or NULL if no bracketting block 120 is found. */ 121 MC_Chunk* MC_(get_freed_block_bracketting)( Addr a ); 122 123 /* For efficient pooled alloc/free of the MC_Chunk. */ 124 extern PoolAlloc* MC_(chunk_poolalloc); 125 126 /* For tracking malloc'd blocks. Nb: it's quite important that it's a 127 VgHashTable, because VgHashTable allows duplicate keys without complaint. 128 This can occur if a user marks a malloc() block as also a custom block with 129 MALLOCLIKE_BLOCK. */ 130 extern VgHashTable *MC_(malloc_list); 131 132 /* For tracking memory pools. */ 133 extern VgHashTable *MC_(mempool_list); 134 135 /* Shadow memory functions */ 136 Bool MC_(check_mem_is_noaccess)( Addr a, SizeT len, Addr* bad_addr ); 137 void MC_(make_mem_noaccess) ( Addr a, SizeT len ); 138 void MC_(make_mem_undefined_w_otag)( Addr a, SizeT len, UInt otag ); 139 void MC_(make_mem_defined) ( Addr a, SizeT len ); 140 void MC_(copy_address_range_state) ( Addr src, Addr dst, SizeT len ); 141 142 void MC_(print_malloc_stats) ( void ); 143 /* nr of free operations done */ 144 SizeT MC_(get_cmalloc_n_frees) ( void ); 145 146 void* MC_(malloc) ( ThreadId tid, SizeT n ); 147 void* MC_(__builtin_new) ( ThreadId tid, SizeT n ); 148 void* MC_(__builtin_vec_new) ( ThreadId tid, SizeT n ); 149 void* MC_(memalign) ( ThreadId tid, SizeT align, SizeT n ); 150 void* MC_(calloc) ( ThreadId tid, SizeT nmemb, SizeT size1 ); 151 void MC_(free) ( ThreadId tid, void* p ); 152 void MC_(__builtin_delete) ( ThreadId tid, void* p ); 153 void MC_(__builtin_vec_delete) ( ThreadId tid, void* p ); 154 void* MC_(realloc) ( ThreadId tid, void* p, SizeT new_size ); 155 SizeT MC_(malloc_usable_size) ( ThreadId tid, void* p ); 156 157 void MC_(handle_resizeInPlace)(ThreadId tid, Addr p, 158 SizeT oldSizeB, SizeT newSizeB, SizeT rzB); 159 160 161 /*------------------------------------------------------------*/ 162 /*--- Origin tracking translate-time support ---*/ 163 /*------------------------------------------------------------*/ 164 165 /* See detailed comments in mc_machine.c. */ 166 Int MC_(get_otrack_shadow_offset) ( Int offset, Int szB ); 167 IRType MC_(get_otrack_reg_array_equiv_int_type) ( IRRegArray* arr ); 168 169 /* Constants which are used as the lowest 2 bits in origin tags. 170 171 An origin tag comprises an upper 30-bit ECU field and a lower 2-bit 172 'kind' field. The ECU field is a number given out by m_execontext 173 and has a 1-1 mapping with ExeContext*s. An ECU can be used 174 directly as an origin tag (otag), but in fact we want to put 175 additional information 'kind' field to indicate roughly where the 176 tag came from. This helps print more understandable error messages 177 for the user -- it has no other purpose. 178 179 Hence the following 2-bit constants are needed for 'kind' field. 180 181 To summarise: 182 183 * Both ECUs and origin tags are represented as 32-bit words 184 185 * m_execontext and the core-tool interface deal purely in ECUs. 186 They have no knowledge of origin tags - that is a purely 187 Memcheck-internal matter. 188 189 * all valid ECUs have the lowest 2 bits zero and at least 190 one of the upper 30 bits nonzero (see VG_(is_plausible_ECU)) 191 192 * to convert from an ECU to an otag, OR in one of the MC_OKIND_ 193 constants below 194 195 * to convert an otag back to an ECU, AND it with ~3 196 */ 197 198 #define MC_OKIND_UNKNOWN 0 /* unknown origin */ 199 #define MC_OKIND_HEAP 1 /* this is a heap origin */ 200 #define MC_OKIND_STACK 2 /* this is a stack origin */ 201 #define MC_OKIND_USER 3 /* arises from user-supplied client req */ 202 203 204 /*------------------------------------------------------------*/ 205 /*--- Profiling of memory events ---*/ 206 /*------------------------------------------------------------*/ 207 208 /* Define to collect detailed performance info. */ 209 /* #define MC_PROFILE_MEMORY */ 210 #ifdef MC_PROFILE_MEMORY 211 212 /* Order of enumerators does not matter. But MCPE_LAST has to be the 213 last entry in the list as it is used as an array bound. */ 214 enum { 215 MCPE_LOADV8, 216 MCPE_LOADV8_SLOW1, 217 MCPE_LOADV8_SLOW2, 218 MCPE_LOADV16, 219 MCPE_LOADV16_SLOW1, 220 MCPE_LOADV16_SLOW2, 221 MCPE_LOADV32, 222 MCPE_LOADV32_SLOW1, 223 MCPE_LOADV32_SLOW2, 224 MCPE_LOADV64, 225 MCPE_LOADV64_SLOW1, 226 MCPE_LOADV64_SLOW2, 227 MCPE_LOADV_128_OR_256, 228 MCPE_LOADV_128_OR_256_SLOW_LOOP, 229 MCPE_LOADV_128_OR_256_SLOW1, 230 MCPE_LOADV_128_OR_256_SLOW2, 231 MCPE_LOADVN_SLOW, 232 MCPE_LOADVN_SLOW_LOOP, 233 MCPE_STOREV8, 234 MCPE_STOREV8_SLOW1, 235 MCPE_STOREV8_SLOW2, 236 MCPE_STOREV8_SLOW3, 237 MCPE_STOREV8_SLOW4, 238 MCPE_STOREV16, 239 MCPE_STOREV16_SLOW1, 240 MCPE_STOREV16_SLOW2, 241 MCPE_STOREV16_SLOW3, 242 MCPE_STOREV16_SLOW4, 243 MCPE_STOREV32, 244 MCPE_STOREV32_SLOW1, 245 MCPE_STOREV32_SLOW2, 246 MCPE_STOREV32_SLOW3, 247 MCPE_STOREV32_SLOW4, 248 MCPE_STOREV64, 249 MCPE_STOREV64_SLOW1, 250 MCPE_STOREV64_SLOW2, 251 MCPE_STOREV64_SLOW3, 252 MCPE_STOREV64_SLOW4, 253 MCPE_STOREVN_SLOW, 254 MCPE_STOREVN_SLOW_LOOP, 255 MCPE_MAKE_ALIGNED_WORD32_UNDEFINED, 256 MCPE_MAKE_ALIGNED_WORD32_UNDEFINED_SLOW, 257 MCPE_MAKE_ALIGNED_WORD64_UNDEFINED, 258 MCPE_MAKE_ALIGNED_WORD64_UNDEFINED_SLOW, 259 MCPE_MAKE_ALIGNED_WORD32_NOACCESS, 260 MCPE_MAKE_ALIGNED_WORD32_NOACCESS_SLOW, 261 MCPE_MAKE_ALIGNED_WORD64_NOACCESS, 262 MCPE_MAKE_ALIGNED_WORD64_NOACCESS_SLOW, 263 MCPE_MAKE_MEM_NOACCESS, 264 MCPE_MAKE_MEM_UNDEFINED, 265 MCPE_MAKE_MEM_UNDEFINED_W_OTAG, 266 MCPE_MAKE_MEM_DEFINED, 267 MCPE_CHEAP_SANITY_CHECK, 268 MCPE_EXPENSIVE_SANITY_CHECK, 269 MCPE_COPY_ADDRESS_RANGE_STATE, 270 MCPE_COPY_ADDRESS_RANGE_STATE_LOOP1, 271 MCPE_COPY_ADDRESS_RANGE_STATE_LOOP2, 272 MCPE_CHECK_MEM_IS_NOACCESS, 273 MCPE_CHECK_MEM_IS_NOACCESS_LOOP, 274 MCPE_IS_MEM_ADDRESSABLE, 275 MCPE_IS_MEM_ADDRESSABLE_LOOP, 276 MCPE_IS_MEM_DEFINED, 277 MCPE_IS_MEM_DEFINED_LOOP, 278 MCPE_IS_MEM_DEFINED_COMPREHENSIVE, 279 MCPE_IS_MEM_DEFINED_COMPREHENSIVE_LOOP, 280 MCPE_IS_DEFINED_ASCIIZ, 281 MCPE_IS_DEFINED_ASCIIZ_LOOP, 282 MCPE_FIND_CHUNK_FOR_OLD, 283 MCPE_FIND_CHUNK_FOR_OLD_LOOP, 284 MCPE_SET_ADDRESS_RANGE_PERMS, 285 MCPE_SET_ADDRESS_RANGE_PERMS_SINGLE_SECMAP, 286 MCPE_SET_ADDRESS_RANGE_PERMS_STARTOF_SECMAP, 287 MCPE_SET_ADDRESS_RANGE_PERMS_MULTIPLE_SECMAPS, 288 MCPE_SET_ADDRESS_RANGE_PERMS_DIST_SM1, 289 MCPE_SET_ADDRESS_RANGE_PERMS_DIST_SM2, 290 MCPE_SET_ADDRESS_RANGE_PERMS_DIST_SM1_QUICK, 291 MCPE_SET_ADDRESS_RANGE_PERMS_DIST_SM2_QUICK, 292 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP1A, 293 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP1B, 294 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP1C, 295 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP8A, 296 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP8B, 297 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP64K, 298 MCPE_SET_ADDRESS_RANGE_PERMS_LOOP64K_FREE_DIST_SM, 299 MCPE_NEW_MEM_STACK, 300 MCPE_NEW_MEM_STACK_4, 301 MCPE_NEW_MEM_STACK_8, 302 MCPE_NEW_MEM_STACK_12, 303 MCPE_NEW_MEM_STACK_16, 304 MCPE_NEW_MEM_STACK_32, 305 MCPE_NEW_MEM_STACK_112, 306 MCPE_NEW_MEM_STACK_128, 307 MCPE_NEW_MEM_STACK_144, 308 MCPE_NEW_MEM_STACK_160, 309 MCPE_DIE_MEM_STACK, 310 MCPE_DIE_MEM_STACK_4, 311 MCPE_DIE_MEM_STACK_8, 312 MCPE_DIE_MEM_STACK_12, 313 MCPE_DIE_MEM_STACK_16, 314 MCPE_DIE_MEM_STACK_32, 315 MCPE_DIE_MEM_STACK_112, 316 MCPE_DIE_MEM_STACK_128, 317 MCPE_DIE_MEM_STACK_144, 318 MCPE_DIE_MEM_STACK_160, 319 /* Do not add enumerators past this line. */ 320 MCPE_LAST 321 }; 322 323 extern ULong MC_(event_ctr)[MCPE_LAST]; 324 325 # define PROF_EVENT(ev) \ 326 do { tl_assert((ev) >= 0 && (ev) < MCPE_LAST); \ 327 MC_(event_ctr)[ev]++; \ 328 } while (False); 329 330 #else 331 332 # define PROF_EVENT(ev) /* */ 333 334 #endif /* MC_PROFILE_MEMORY */ 335 336 337 /*------------------------------------------------------------*/ 338 /*--- V and A bits (Victoria & Albert ?) ---*/ 339 /*------------------------------------------------------------*/ 340 341 /* The number of entries in the primary map can be altered. However 342 we hardwire the assumption that each secondary map covers precisely 343 64k of address space. */ 344 #define SM_SIZE 65536 /* DO NOT CHANGE */ 345 #define SM_MASK (SM_SIZE-1) /* DO NOT CHANGE */ 346 347 #define V_BIT_DEFINED 0 348 #define V_BIT_UNDEFINED 1 349 350 #define V_BITS8_DEFINED 0 351 #define V_BITS8_UNDEFINED 0xFF 352 353 #define V_BITS16_DEFINED 0 354 #define V_BITS16_UNDEFINED 0xFFFF 355 356 #define V_BITS32_DEFINED 0 357 #define V_BITS32_UNDEFINED 0xFFFFFFFF 358 359 #define V_BITS64_DEFINED 0ULL 360 #define V_BITS64_UNDEFINED 0xFFFFFFFFFFFFFFFFULL 361 362 363 /*------------------------------------------------------------*/ 364 /*--- Leak checking ---*/ 365 /*------------------------------------------------------------*/ 366 367 typedef 368 enum { 369 // Nb: the order is important -- it dictates the order of loss records 370 // of equal sizes. 371 Reachable =0, // Definitely reachable from root-set. 372 Possible =1, // Possibly reachable from root-set; involves at 373 // least one interior-pointer along the way. 374 IndirectLeak =2, // Leaked, but reachable from another leaked block 375 // (be it Unreached or IndirectLeak). 376 Unreached =3, // Not reached, ie. leaked. 377 // (At best, only reachable from itself via a cycle.) 378 } 379 Reachedness; 380 381 // Build mask to check or set Reachedness r membership 382 #define R2S(r) (1 << (r)) 383 // Reachedness r is member of the Set s ? 384 #define RiS(r,s) ((s) & R2S(r)) 385 // Returns a set containing all Reachedness 386 UInt MC_(all_Reachedness)(void); 387 388 /* For VALGRIND_COUNT_LEAKS client request */ 389 extern SizeT MC_(bytes_leaked); 390 extern SizeT MC_(bytes_indirect); 391 extern SizeT MC_(bytes_dubious); 392 extern SizeT MC_(bytes_reachable); 393 extern SizeT MC_(bytes_suppressed); 394 395 /* For VALGRIND_COUNT_LEAK_BLOCKS client request */ 396 extern SizeT MC_(blocks_leaked); 397 extern SizeT MC_(blocks_indirect); 398 extern SizeT MC_(blocks_dubious); 399 extern SizeT MC_(blocks_reachable); 400 extern SizeT MC_(blocks_suppressed); 401 402 typedef 403 enum { 404 LC_Off, 405 LC_Summary, 406 LC_Full, 407 } 408 LeakCheckMode; 409 410 typedef 411 enum { 412 LCD_Any, // output all loss records, whatever the delta 413 LCD_Increased, // output loss records with an increase in size or blocks 414 LCD_Changed, // output loss records with an increase or 415 //decrease in size or blocks 416 } 417 LeakCheckDeltaMode; 418 419 /* When a LossRecord is put into an OSet, these elements represent the key. */ 420 typedef 421 struct _LossRecordKey { 422 Reachedness state; // LC_Extra.state value shared by all blocks. 423 ExeContext* allocated_at; // Where they were allocated. 424 } 425 LossRecordKey; 426 427 /* A loss record, used for generating err msgs. Multiple leaked blocks can be 428 * merged into a single loss record if they have the same state and similar 429 * enough allocation points (controlled by --leak-resolution). */ 430 typedef 431 struct _LossRecord { 432 LossRecordKey key; // Key, when used in an OSet. 433 SizeT szB; // Sum of all MC_Chunk.szB values. 434 SizeT indirect_szB; // Sum of all LC_Extra.indirect_szB values. 435 UInt num_blocks; // Number of blocks represented by the record. 436 SizeT old_szB; // old_* values are the values found during the 437 SizeT old_indirect_szB; // previous leak search. old_* values are used to 438 UInt old_num_blocks; // output only the changed/new loss records 439 } 440 LossRecord; 441 442 typedef 443 struct _LeakCheckParams { 444 LeakCheckMode mode; 445 UInt show_leak_kinds; 446 UInt errors_for_leak_kinds; 447 UInt heuristics; 448 LeakCheckDeltaMode deltamode; 449 UInt max_loss_records_output; // limit on the nr of loss records output. 450 Bool requested_by_monitor_command; // True when requested by gdb/vgdb. 451 } 452 LeakCheckParams; 453 454 void MC_(detect_memory_leaks) ( ThreadId tid, LeakCheckParams * lcp); 455 456 // Each time a leak search is done, the leak search generation 457 // MC_(leak_search_gen) is incremented. 458 extern UInt MC_(leak_search_gen); 459 460 // maintains the lcp.deltamode given in the last call to detect_memory_leaks 461 extern LeakCheckDeltaMode MC_(detect_memory_leaks_last_delta_mode); 462 463 // prints the list of blocks corresponding to the given loss_record_nr slice 464 // (from/to) (up to maximum max_blocks) 465 // Returns True if loss_record_nr_from identifies a correct loss record 466 // from last leak search, returns False otherwise. 467 // Note that loss_record_nr_to can be bigger than the nr of loss records. All 468 // loss records after from will then be examined and maybe printed. 469 // If heuristics != 0, print only the loss records/blocks found via 470 // one of the heuristics in the set. 471 Bool MC_(print_block_list) ( UInt loss_record_nr_from, UInt loss_record_nr_to, 472 UInt max_blocks, UInt heuristics); 473 474 // Prints the addresses/registers/... at which a pointer to 475 // the given range [address, address+szB[ is found. 476 void MC_(who_points_at) ( Addr address, SizeT szB); 477 478 // if delta_mode == LCD_Any, prints in buf an empty string 479 // otherwise prints a delta in the layout " (+%'lu)" or " (-%'lu)" 480 extern HChar * MC_(snprintf_delta) (HChar * buf, Int size, 481 SizeT current_val, SizeT old_val, 482 LeakCheckDeltaMode delta_mode); 483 484 485 Bool MC_(is_valid_aligned_word) ( Addr a ); 486 Bool MC_(is_within_valid_secondary) ( Addr a ); 487 488 // Prints as user msg a description of the given loss record. 489 void MC_(pp_LossRecord)(UInt n_this_record, UInt n_total_records, 490 LossRecord* l); 491 492 493 /*------------------------------------------------------------*/ 494 /*--- Errors and suppressions ---*/ 495 /*------------------------------------------------------------*/ 496 497 /* Did we show to the user, any errors for which an uninitialised 498 value origin could have been collected (but wasn't) ? If yes, 499 then, at the end of the run, print a 1 line message advising that a 500 rerun with --track-origins=yes might help. */ 501 extern Bool MC_(any_value_errors); 502 503 /* Standard functions for error and suppressions as required by the 504 core/tool iface */ 505 Bool MC_(eq_Error) ( VgRes res, const Error* e1, const Error* e2 ); 506 void MC_(before_pp_Error) ( const Error* err ); 507 void MC_(pp_Error) ( const Error* err ); 508 UInt MC_(update_Error_extra) ( const Error* err ); 509 510 Bool MC_(is_recognised_suppression) ( const HChar* name, Supp* su ); 511 512 Bool MC_(read_extra_suppression_info) ( Int fd, HChar** buf, 513 SizeT* nBuf, Int* lineno, Supp *su ); 514 515 Bool MC_(error_matches_suppression) ( const Error* err, const Supp* su ); 516 517 SizeT MC_(get_extra_suppression_info) ( const Error* err, 518 /*OUT*/HChar* buf, Int nBuf ); 519 SizeT MC_(print_extra_suppression_use) ( const Supp* su, 520 /*OUT*/HChar* buf, Int nBuf ); 521 void MC_(update_extra_suppression_use) ( const Error* err, const Supp* su ); 522 523 const HChar* MC_(get_error_name) ( const Error* err ); 524 525 /* Recording of errors */ 526 void MC_(record_address_error) ( ThreadId tid, Addr a, Int szB, 527 Bool isWrite ); 528 void MC_(record_cond_error) ( ThreadId tid, UInt otag ); 529 void MC_(record_value_error) ( ThreadId tid, Int szB, UInt otag ); 530 void MC_(record_jump_error) ( ThreadId tid, Addr a ); 531 532 void MC_(record_free_error) ( ThreadId tid, Addr a ); 533 void MC_(record_illegal_mempool_error) ( ThreadId tid, Addr a ); 534 void MC_(record_freemismatch_error) ( ThreadId tid, MC_Chunk* mc ); 535 536 void MC_(record_overlap_error) ( ThreadId tid, const HChar* function, 537 Addr src, Addr dst, SizeT szB ); 538 void MC_(record_core_mem_error) ( ThreadId tid, const HChar* msg ); 539 void MC_(record_regparam_error) ( ThreadId tid, const HChar* msg, UInt otag ); 540 void MC_(record_memparam_error) ( ThreadId tid, Addr a, 541 Bool isAddrErr, const HChar* msg, UInt otag ); 542 void MC_(record_user_error) ( ThreadId tid, Addr a, 543 Bool isAddrErr, UInt otag ); 544 545 Bool MC_(record_leak_error) ( ThreadId tid, 546 UInt n_this_record, 547 UInt n_total_records, 548 LossRecord* lossRecord, 549 Bool print_record, 550 Bool count_error ); 551 552 Bool MC_(record_fishy_value_error) ( ThreadId tid, const HChar* function, 553 const HChar *argument_name, SizeT value ); 554 555 /* Leak kinds tokens to call VG_(parse_enum_set). */ 556 extern const HChar* MC_(parse_leak_kinds_tokens); 557 558 /* prints a description of address a */ 559 void MC_(pp_describe_addr) (Addr a); 560 561 /* Is this address in a user-specified "ignored range" ? */ 562 Bool MC_(in_ignored_range) ( Addr a ); 563 564 565 /*------------------------------------------------------------*/ 566 /*--- Client blocks ---*/ 567 /*------------------------------------------------------------*/ 568 569 /* Describes a client block. See mc_main.c. An unused block has 570 start == size == 0. */ 571 typedef 572 struct { 573 Addr start; 574 SizeT size; 575 ExeContext* where; 576 HChar* desc; 577 } 578 CGenBlock; 579 580 /* Get access to the client block array. */ 581 void MC_(get_ClientBlock_array)( /*OUT*/CGenBlock** blocks, 582 /*OUT*/UWord* nBlocks ); 583 584 585 /*------------------------------------------------------------*/ 586 /*--- Command line options + defaults ---*/ 587 /*------------------------------------------------------------*/ 588 589 /* Allow loads from partially-valid addresses? default: YES */ 590 extern Bool MC_(clo_partial_loads_ok); 591 592 /* Max volume of the freed blocks queue. */ 593 extern Long MC_(clo_freelist_vol); 594 595 /* Blocks with a size >= MC_(clo_freelist_big_blocks) will be put 596 in the "big block" freed blocks queue. */ 597 extern Long MC_(clo_freelist_big_blocks); 598 599 /* Do leak check at exit? default: NO */ 600 extern LeakCheckMode MC_(clo_leak_check); 601 602 /* How closely should we compare ExeContexts in leak records? default: 2 */ 603 extern VgRes MC_(clo_leak_resolution); 604 605 /* In leak check, show loss records if their R2S(reachedness) is set. 606 Default : R2S(Possible) | R2S(Unreached). */ 607 extern UInt MC_(clo_show_leak_kinds); 608 609 /* In leak check, a loss record is an error if its R2S(reachedness) is set. 610 Default : R2S(Possible) | R2S(Unreached). */ 611 extern UInt MC_(clo_errors_for_leak_kinds); 612 613 /* Various leak check heuristics which can be activated/deactivated. */ 614 typedef 615 enum { 616 LchNone =0, 617 // no heuristic. 618 LchStdString =1, 619 // Consider interior pointer pointing at the array of char in a 620 // std::string as reachable. 621 LchLength64 =2, 622 // Consider interior pointer pointing at offset 64bit of a block as 623 // reachable, when the first 8 bytes contains the block size - 8. 624 // Such length+interior pointers are used by e.g. sqlite3MemMalloc. 625 // On 64bit platforms LchNewArray will also match these blocks. 626 LchNewArray =3, 627 // Consider interior pointer pointing at second word of a new[] array as 628 // reachable. Such interior pointers are used for arrays whose elements 629 // have a destructor. 630 LchMultipleInheritance =4, 631 // Conside interior pointer pointing just after what looks a vtable 632 // as reachable. 633 } 634 LeakCheckHeuristic; 635 636 // Nr of heuristics, including the LchNone heuristic. 637 #define N_LEAK_CHECK_HEURISTICS 5 638 639 // Build mask to check or set Heuristic h membership 640 #define H2S(h) (1 << (h)) 641 // Heuristic h is member of the Set s ? 642 #define HiS(h,s) ((s) & H2S(h)) 643 644 /* Heuristics set to use for the leak search. 645 Default : all heuristics. */ 646 extern UInt MC_(clo_leak_check_heuristics); 647 648 /* Assume accesses immediately below %esp are due to gcc-2.96 bugs. 649 * default: NO */ 650 extern Bool MC_(clo_workaround_gcc296_bugs); 651 652 /* Fill malloc-d/free-d client blocks with a specific value? -1 if 653 not, else 0x00 .. 0xFF indicating the fill value to use. Can be 654 useful for causing programs with bad heap corruption to fail in 655 more repeatable ways. Note that malloc-filled and free-filled 656 areas are still undefined and noaccess respectively. This merely 657 causes them to contain the specified values. */ 658 extern Int MC_(clo_malloc_fill); 659 extern Int MC_(clo_free_fill); 660 661 /* Which stack trace(s) to keep for malloc'd/free'd client blocks? 662 For each client block, the stack traces where it was allocated 663 and/or freed are optionally kept depending on MC_(clo_keep_stacktraces). */ 664 typedef 665 enum { // keep alloc stack trace ? keep free stack trace ? 666 KS_none, // never never 667 KS_alloc, // always never 668 KS_free, // never always 669 KS_alloc_then_free, // when still malloc'd when free'd 670 KS_alloc_and_free, // always always 671 } 672 KeepStacktraces; 673 extern KeepStacktraces MC_(clo_keep_stacktraces); 674 675 /* Indicates the level of instrumentation/checking done by Memcheck. 676 677 1 = No undefined value checking, Addrcheck-style behaviour only: 678 only address checking is done. This is faster but finds fewer 679 errors. Note that although Addrcheck had 1 bit per byte 680 overhead vs the old Memcheck's 9 bits per byte, with this mode 681 and compressed V bits, no memory is saved with this mode -- 682 it's still 2 bits per byte overhead. This is a little wasteful 683 -- it could be done with 1 bit per byte -- but lets us reuse 684 the many shadow memory access functions. Note that in this 685 mode neither the secondary V bit table nor the origin-tag cache 686 are used. 687 688 2 = Address checking and Undefined value checking are performed, 689 but origins are not tracked. So the origin-tag cache is not 690 used in this mode. This setting is the default and corresponds 691 to the "normal" Memcheck behaviour that has shipped for years. 692 693 3 = Address checking, undefined value checking, and origins for 694 undefined values are tracked. 695 696 The default is 2. 697 */ 698 extern Int MC_(clo_mc_level); 699 700 /* Should we show mismatched frees? Default: YES */ 701 extern Bool MC_(clo_show_mismatched_frees); 702 703 /* Should we use expensive definedness checking for add/sub and compare 704 operations? Default: NO */ 705 extern Bool MC_(clo_expensive_definedness_checks); 706 707 /*------------------------------------------------------------*/ 708 /*--- Instrumentation ---*/ 709 /*------------------------------------------------------------*/ 710 711 /* Functions defined in mc_main.c */ 712 713 /* For the fail_w_o functions, the UWord arg is actually the 32-bit 714 origin tag and should really be UInt, but to be simple and safe 715 considering it's called from generated code, just claim it to be a 716 UWord. */ 717 VG_REGPARM(2) void MC_(helperc_value_checkN_fail_w_o) ( HWord, UWord ); 718 VG_REGPARM(1) void MC_(helperc_value_check8_fail_w_o) ( UWord ); 719 VG_REGPARM(1) void MC_(helperc_value_check4_fail_w_o) ( UWord ); 720 VG_REGPARM(1) void MC_(helperc_value_check1_fail_w_o) ( UWord ); 721 VG_REGPARM(1) void MC_(helperc_value_check0_fail_w_o) ( UWord ); 722 723 /* And call these ones instead to report an uninitialised value error 724 but with no origin available. */ 725 VG_REGPARM(1) void MC_(helperc_value_checkN_fail_no_o) ( HWord ); 726 VG_REGPARM(0) void MC_(helperc_value_check8_fail_no_o) ( void ); 727 VG_REGPARM(0) void MC_(helperc_value_check4_fail_no_o) ( void ); 728 VG_REGPARM(0) void MC_(helperc_value_check1_fail_no_o) ( void ); 729 VG_REGPARM(0) void MC_(helperc_value_check0_fail_no_o) ( void ); 730 731 /* V-bits load/store helpers */ 732 VG_REGPARM(1) void MC_(helperc_STOREV64be) ( Addr, ULong ); 733 VG_REGPARM(1) void MC_(helperc_STOREV64le) ( Addr, ULong ); 734 VG_REGPARM(2) void MC_(helperc_STOREV32be) ( Addr, UWord ); 735 VG_REGPARM(2) void MC_(helperc_STOREV32le) ( Addr, UWord ); 736 VG_REGPARM(2) void MC_(helperc_STOREV16be) ( Addr, UWord ); 737 VG_REGPARM(2) void MC_(helperc_STOREV16le) ( Addr, UWord ); 738 VG_REGPARM(2) void MC_(helperc_STOREV8) ( Addr, UWord ); 739 740 VG_REGPARM(2) void MC_(helperc_LOADV256be) ( /*OUT*/V256*, Addr ); 741 VG_REGPARM(2) void MC_(helperc_LOADV256le) ( /*OUT*/V256*, Addr ); 742 VG_REGPARM(2) void MC_(helperc_LOADV128be) ( /*OUT*/V128*, Addr ); 743 VG_REGPARM(2) void MC_(helperc_LOADV128le) ( /*OUT*/V128*, Addr ); 744 VG_REGPARM(1) ULong MC_(helperc_LOADV64be) ( Addr ); 745 VG_REGPARM(1) ULong MC_(helperc_LOADV64le) ( Addr ); 746 VG_REGPARM(1) UWord MC_(helperc_LOADV32be) ( Addr ); 747 VG_REGPARM(1) UWord MC_(helperc_LOADV32le) ( Addr ); 748 VG_REGPARM(1) UWord MC_(helperc_LOADV16be) ( Addr ); 749 VG_REGPARM(1) UWord MC_(helperc_LOADV16le) ( Addr ); 750 VG_REGPARM(1) UWord MC_(helperc_LOADV8) ( Addr ); 751 752 void MC_(helperc_MAKE_STACK_UNINIT) ( Addr base, UWord len, 753 Addr nia ); 754 755 /* Origin tag load/store helpers */ 756 VG_REGPARM(2) void MC_(helperc_b_store1) ( Addr a, UWord d32 ); 757 VG_REGPARM(2) void MC_(helperc_b_store2) ( Addr a, UWord d32 ); 758 VG_REGPARM(2) void MC_(helperc_b_store4) ( Addr a, UWord d32 ); 759 VG_REGPARM(2) void MC_(helperc_b_store8) ( Addr a, UWord d32 ); 760 VG_REGPARM(2) void MC_(helperc_b_store16)( Addr a, UWord d32 ); 761 VG_REGPARM(2) void MC_(helperc_b_store32)( Addr a, UWord d32 ); 762 VG_REGPARM(1) UWord MC_(helperc_b_load1) ( Addr a ); 763 VG_REGPARM(1) UWord MC_(helperc_b_load2) ( Addr a ); 764 VG_REGPARM(1) UWord MC_(helperc_b_load4) ( Addr a ); 765 VG_REGPARM(1) UWord MC_(helperc_b_load8) ( Addr a ); 766 VG_REGPARM(1) UWord MC_(helperc_b_load16)( Addr a ); 767 VG_REGPARM(1) UWord MC_(helperc_b_load32)( Addr a ); 768 769 /* Functions defined in mc_translate.c */ 770 IRSB* MC_(instrument) ( VgCallbackClosure* closure, 771 IRSB* bb_in, 772 const VexGuestLayout* layout, 773 const VexGuestExtents* vge, 774 const VexArchInfo* archinfo_host, 775 IRType gWordTy, IRType hWordTy ); 776 777 IRSB* MC_(final_tidy) ( IRSB* ); 778 779 #endif /* ndef __MC_INCLUDE_H */ 780 781 /*--------------------------------------------------------------------*/ 782 /*--- end ---*/ 783 /*--------------------------------------------------------------------*/ 784
