1 2/*--------------------------------------------------------------------*/ 3/*--- Reading of syms & debug info from PDB-format files. ---*/ 4/*--- readpdb.c ---*/ 5/*--------------------------------------------------------------------*/ 6 7/* 8 This file is part of Valgrind, a dynamic binary instrumentation 9 framework. 10 Spring 2008: 11 derived from readelf.c and valgrind-20031012-wine/vg_symtab2.c 12 derived from wine-1.0/tools/winedump/pdb.c and msc.c 13 14 Copyright (C) 2000-2013 Julian Seward 15 jseward@acm.org 16 Copyright 2006 Eric Pouech (winedump/pdb.c and msc.c) 17 GNU Lesser General Public License version 2.1 or later applies. 18 Copyright (C) 2008 BitWagon Software LLC 19 20 This program is free software; you can redistribute it and/or 21 modify it under the terms of the GNU General Public License as 22 published by the Free Software Foundation; either version 2 of the 23 License, or (at your option) any later version. 24 25 This program is distributed in the hope that it will be useful, but 26 WITHOUT ANY WARRANTY; without even the implied warranty of 27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 28 General Public License for more details. 29 30 You should have received a copy of the GNU General Public License 31 along with this program; if not, write to the Free Software 32 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 33 02111-1307, USA. 34 35 The GNU General Public License is contained in the file COPYING. 36*/ 37 38#if defined(VGO_linux) || defined(VGO_darwin) 39 40#include "pub_core_basics.h" 41#include "pub_core_debuginfo.h" 42#include "pub_core_vki.h" // VKI_PAGE_SIZE 43#include "pub_core_libcbase.h" 44#include "pub_core_libcassert.h" 45#include "pub_core_libcfile.h" // VG_(open), read, lseek, close 46#include "pub_core_libcprint.h" 47#include "pub_core_libcproc.h" // VG_(getpid), system 48#include "pub_core_options.h" // VG_(clo_verbosity) 49#include "pub_core_xarray.h" // keeps priv_storage.h happy 50#include "pub_core_redir.h" 51 52#include "priv_misc.h" /* dinfo_zalloc/free/strdup */ 53#include "priv_image.h" 54#include "priv_d3basics.h" 55#include "priv_storage.h" 56#include "priv_readpdb.h" // self 57 58 59/*------------------------------------------------------------*/ 60/*--- ---*/ 61/*--- Biasing ---*/ 62/*--- ---*/ 63/*------------------------------------------------------------*/ 64 65/* There are just two simple ways of biasing in use here. 66 67 The CodeView debug info entries contain virtual addresses 68 relative to segment (here it is one PE section), which in 69 turn specifies its start as a VA relative to "image base". 70 71 The second type of debug info (FPOs) contain VAs relative 72 directly to the image base, without the segment indirection. 73 74 The original/preferred image base is set in the PE header, 75 but it can change as long as the file contains relocation 76 data. So everything is biased using the current image base, 77 which is the base AVMA passed by Wine. 78 79 The difference between the original image base and current 80 image base, which is what Wine sends here in the last 81 argument of VG_(di_notify_pdb_debuginfo), is not used. 82*/ 83 84/* This module leaks space; enable m_main's calling of 85 VG_(di_discard_ALL_debuginfo)() at shutdown and run with 86 --profile-heap=yes to see. The main culprit appears to be 87 di.readpe.pdr.1. I haven't bothered to chase it further. */ 88 89 90/*------------------------------------------------------------*/ 91/*--- ---*/ 92/*--- PE/PDB definitions ---*/ 93/*--- ---*/ 94/*------------------------------------------------------------*/ 95 96typedef UInt DWORD; 97typedef UShort WORD; 98typedef UChar BYTE; 99 100 101/* the following DOS and WINDOWS structures, defines and PE/PDB 102 * parsing code are copied or derived from the WINE 103 * project - http://www.winehq.com/ 104 */ 105 106/* 107 * File formats definitions 108 */ 109#define OFFSET_OF(__c,__f) ((int)(((char*)&(((__c*)0)->__f))-((char*)0))) 110#define WIN32_PATH_MAX 256 111 112#pragma pack(2) 113typedef struct _IMAGE_DOS_HEADER { 114 unsigned short e_magic; /* 00: MZ Header signature */ 115 unsigned short e_cblp; /* 02: Bytes on last page of file */ 116 unsigned short e_cp; /* 04: Pages in file */ 117 unsigned short e_crlc; /* 06: Relocations */ 118 unsigned short e_cparhdr; /* 08: Size of header in paragraphs */ 119 unsigned short e_minalloc; /* 0a: Minimum extra paragraphs needed */ 120 unsigned short e_maxalloc; /* 0c: Maximum extra paragraphs needed */ 121 unsigned short e_ss; /* 0e: Initial (relative) SS value */ 122 unsigned short e_sp; /* 10: Initial SP value */ 123 unsigned short e_csum; /* 12: Checksum */ 124 unsigned short e_ip; /* 14: Initial IP value */ 125 unsigned short e_cs; /* 16: Initial (relative) CS value */ 126 unsigned short e_lfarlc; /* 18: File address of relocation table */ 127 unsigned short e_ovno; /* 1a: Overlay number */ 128 unsigned short e_res[4]; /* 1c: Reserved words */ 129 unsigned short e_oemid; /* 24: OEM identifier (for e_oeminfo) */ 130 unsigned short e_oeminfo; /* 26: OEM information; e_oemid specific */ 131 unsigned short e_res2[10]; /* 28: Reserved words */ 132 unsigned long e_lfanew; /* 3c: Offset to extended header */ 133} IMAGE_DOS_HEADER, *PIMAGE_DOS_HEADER; 134 135#define IMAGE_DOS_SIGNATURE 0x5A4D /* MZ */ 136#define IMAGE_OS2_SIGNATURE 0x454E /* NE */ 137#define IMAGE_OS2_SIGNATURE_LE 0x454C /* LE */ 138#define IMAGE_OS2_SIGNATURE_LX 0x584C /* LX */ 139#define IMAGE_VXD_SIGNATURE 0x454C /* LE */ 140#define IMAGE_NT_SIGNATURE 0x00004550 /* PE00 */ 141 142/* Subsystem Values */ 143 144#define IMAGE_SUBSYSTEM_UNKNOWN 0 145#define IMAGE_SUBSYSTEM_NATIVE 1 146#define IMAGE_SUBSYSTEM_WINDOWS_GUI 2 /* Windows GUI subsystem */ 147#define IMAGE_SUBSYSTEM_WINDOWS_CUI 3 /* Windows character subsystem*/ 148#define IMAGE_SUBSYSTEM_OS2_CUI 5 149#define IMAGE_SUBSYSTEM_POSIX_CUI 7 150 151typedef struct _IMAGE_FILE_HEADER { 152 unsigned short Machine; 153 unsigned short NumberOfSections; 154 unsigned long TimeDateStamp; 155 unsigned long PointerToSymbolTable; 156 unsigned long NumberOfSymbols; 157 unsigned short SizeOfOptionalHeader; 158 unsigned short Characteristics; 159} IMAGE_FILE_HEADER, *PIMAGE_FILE_HEADER; 160 161typedef struct _IMAGE_DATA_DIRECTORY { 162 unsigned long VirtualAddress; 163 unsigned long Size; 164} IMAGE_DATA_DIRECTORY, *PIMAGE_DATA_DIRECTORY; 165 166#define IMAGE_NUMBEROF_DIRECTORY_ENTRIES 16 167 168typedef struct _IMAGE_OPTIONAL_HEADER { 169 170 /* Standard fields */ 171 172 unsigned short Magic; /* 0x10b or 0x107 */ /* 0x00 */ 173 unsigned char MajorLinkerVersion; 174 unsigned char MinorLinkerVersion; 175 unsigned long SizeOfCode; 176 unsigned long SizeOfInitializedData; 177 unsigned long SizeOfUninitializedData; 178 unsigned long AddressOfEntryPoint; /* 0x10 */ 179 unsigned long BaseOfCode; 180 unsigned long BaseOfData; 181 182 /* NT additional fields */ 183 184 unsigned long ImageBase; 185 unsigned long SectionAlignment; /* 0x20 */ 186 unsigned long FileAlignment; 187 unsigned short MajorOperatingSystemVersion; 188 unsigned short MinorOperatingSystemVersion; 189 unsigned short MajorImageVersion; 190 unsigned short MinorImageVersion; 191 unsigned short MajorSubsystemVersion; /* 0x30 */ 192 unsigned short MinorSubsystemVersion; 193 unsigned long Win32VersionValue; 194 unsigned long SizeOfImage; 195 unsigned long SizeOfHeaders; 196 unsigned long CheckSum; /* 0x40 */ 197 unsigned short Subsystem; 198 unsigned short DllCharacteristics; 199 unsigned long SizeOfStackReserve; 200 unsigned long SizeOfStackCommit; 201 unsigned long SizeOfHeapReserve; /* 0x50 */ 202 unsigned long SizeOfHeapCommit; 203 unsigned long LoaderFlags; 204 unsigned long NumberOfRvaAndSizes; 205 IMAGE_DATA_DIRECTORY DataDirectory[IMAGE_NUMBEROF_DIRECTORY_ENTRIES]; /* 0x60 */ 206 /* 0xE0 */ 207} IMAGE_OPTIONAL_HEADER, *PIMAGE_OPTIONAL_HEADER; 208 209typedef struct _IMAGE_NT_HEADERS { 210 unsigned long Signature; /* "PE"\0\0 */ /* 0x00 */ 211 IMAGE_FILE_HEADER FileHeader; /* 0x04 */ 212 IMAGE_OPTIONAL_HEADER OptionalHeader; /* 0x18 */ 213} IMAGE_NT_HEADERS, *PIMAGE_NT_HEADERS; 214 215#define IMAGE_SIZEOF_SHORT_NAME 8 216 217typedef struct _IMAGE_SECTION_HEADER { 218 unsigned char Name[IMAGE_SIZEOF_SHORT_NAME]; 219 union { 220 unsigned long PhysicalAddress; 221 unsigned long VirtualSize; 222 } Misc; 223 unsigned long VirtualAddress; 224 unsigned long SizeOfRawData; 225 unsigned long PointerToRawData; 226 unsigned long PointerToRelocations; 227 unsigned long PointerToLinenumbers; 228 unsigned short NumberOfRelocations; 229 unsigned short NumberOfLinenumbers; 230 unsigned long Characteristics; 231} IMAGE_SECTION_HEADER, *PIMAGE_SECTION_HEADER; 232 233#define IMAGE_SIZEOF_SECTION_HEADER 40 234 235#define IMAGE_FIRST_SECTION(ntheader) \ 236 ((PIMAGE_SECTION_HEADER)((LPunsigned char)&((PIMAGE_NT_HEADERS)(ntheader))->OptionalHeader + \ 237 ((PIMAGE_NT_HEADERS)(ntheader))->FileHeader.SizeOfOptionalHeader)) 238 239/* These defines are for the Characteristics bitfield. */ 240/* #define IMAGE_SCN_TYPE_REG 0x00000000 - Reserved */ 241/* #define IMAGE_SCN_TYPE_DSECT 0x00000001 - Reserved */ 242/* #define IMAGE_SCN_TYPE_NOLOAD 0x00000002 - Reserved */ 243/* #define IMAGE_SCN_TYPE_GROUP 0x00000004 - Reserved */ 244/* #define IMAGE_SCN_TYPE_NO_PAD 0x00000008 - Reserved */ 245/* #define IMAGE_SCN_TYPE_COPY 0x00000010 - Reserved */ 246 247#define IMAGE_SCN_CNT_CODE 0x00000020 248#define IMAGE_SCN_CNT_INITIALIZED_DATA 0x00000040 249#define IMAGE_SCN_CNT_UNINITIALIZED_DATA 0x00000080 250 251#define IMAGE_SCN_LNK_OTHER 0x00000100 252#define IMAGE_SCN_LNK_INFO 0x00000200 253/* #define IMAGE_SCN_TYPE_OVER 0x00000400 - Reserved */ 254#define IMAGE_SCN_LNK_REMOVE 0x00000800 255#define IMAGE_SCN_LNK_COMDAT 0x00001000 256 257/* 0x00002000 - Reserved */ 258/* #define IMAGE_SCN_MEM_PROTECTED 0x00004000 - Obsolete */ 259#define IMAGE_SCN_MEM_FARDATA 0x00008000 260 261/* #define IMAGE_SCN_MEM_SYSHEAP 0x00010000 - Obsolete */ 262#define IMAGE_SCN_MEM_PURGEABLE 0x00020000 263#define IMAGE_SCN_MEM_16BIT 0x00020000 264#define IMAGE_SCN_MEM_LOCKED 0x00040000 265#define IMAGE_SCN_MEM_PRELOAD 0x00080000 266 267#define IMAGE_SCN_ALIGN_1BYTES 0x00100000 268#define IMAGE_SCN_ALIGN_2BYTES 0x00200000 269#define IMAGE_SCN_ALIGN_4BYTES 0x00300000 270#define IMAGE_SCN_ALIGN_8BYTES 0x00400000 271#define IMAGE_SCN_ALIGN_16BYTES 0x00500000 /* Default */ 272#define IMAGE_SCN_ALIGN_32BYTES 0x00600000 273#define IMAGE_SCN_ALIGN_64BYTES 0x00700000 274/* 0x00800000 - Unused */ 275 276#define IMAGE_SCN_LNK_NRELOC_OVFL 0x01000000 277 278 279#define IMAGE_SCN_MEM_DISCARDABLE 0x02000000 280#define IMAGE_SCN_MEM_NOT_CACHED 0x04000000 281#define IMAGE_SCN_MEM_NOT_PAGED 0x08000000 282#define IMAGE_SCN_MEM_SHARED 0x10000000 283#define IMAGE_SCN_MEM_EXECUTE 0x20000000 284#define IMAGE_SCN_MEM_READ 0x40000000 285#define IMAGE_SCN_MEM_WRITE 0x80000000 286 287#pragma pack() 288 289typedef struct _GUID /* 16 bytes */ 290{ 291 unsigned int Data1; 292 unsigned short Data2; 293 unsigned short Data3; 294 unsigned char Data4[ 8 ]; 295} GUID; 296 297/*======================================================================== 298 * Process PDB file. 299 */ 300 301#pragma pack(1) 302typedef struct _PDB_FILE 303{ 304 unsigned long size; 305 unsigned long unknown; 306 307} PDB_FILE, *PPDB_FILE; 308 309// A .pdb file begins with a variable-length one-line text string 310// that ends in "\r\n\032". This is followed by a 4-byte "signature" 311// ("DS\0\0" for newer files, "JG\0\0" for older files), then 312// aligned up to a 4-byte boundary, then the struct below: 313struct PDB_JG_HEADER 314{ 315 //char ident[40]; // "Microsoft C/C++ program database 2.00\r\n\032" 316 //unsigned long signature; // "JG\0\0" 317 unsigned int blocksize; // 0x400 typical; also 0x800, 0x1000 318 unsigned short freelist; 319 unsigned short total_alloc; 320 PDB_FILE toc; 321 unsigned short toc_block[ 1 ]; 322}; 323 324struct PDB_DS_HEADER 325{ 326 //char signature[32]; // "Microsoft C/C++ MSF 7.00\r\n\032DS\0\0" 327 unsigned int block_size; 328 unsigned int unknown1; 329 unsigned int num_pages; 330 unsigned int toc_size; 331 unsigned int unknown2; 332 unsigned int toc_page; 333}; 334 335struct PDB_JG_TOC 336{ 337 unsigned int nFiles; 338 PDB_FILE file[ 1 ]; 339 340}; 341 342struct PDB_DS_TOC 343{ 344 unsigned int num_files; 345 unsigned int file_size[1]; 346}; 347 348struct PDB_JG_ROOT 349{ 350 unsigned int version; 351 unsigned int TimeDateStamp; 352 unsigned int age; 353 unsigned int cbNames; 354 char names[ 1 ]; 355}; 356 357struct PDB_DS_ROOT 358{ 359 unsigned int version; 360 unsigned int TimeDateStamp; 361 unsigned int age; 362 GUID guid; 363 unsigned int cbNames; 364 char names[1]; 365}; 366 367typedef struct _PDB_TYPES_OLD 368{ 369 unsigned long version; 370 unsigned short first_index; 371 unsigned short last_index; 372 unsigned long type_size; 373 unsigned short file; 374 unsigned short pad; 375 376} PDB_TYPES_OLD, *PPDB_TYPES_OLD; 377 378typedef struct _PDB_TYPES 379{ 380 unsigned long version; 381 unsigned long type_offset; 382 unsigned long first_index; 383 unsigned long last_index; 384 unsigned long type_size; 385 unsigned short file; 386 unsigned short pad; 387 unsigned long hash_size; 388 unsigned long hash_base; 389 unsigned long hash_offset; 390 unsigned long hash_len; 391 unsigned long search_offset; 392 unsigned long search_len; 393 unsigned long unknown_offset; 394 unsigned long unknown_len; 395 396} PDB_TYPES, *PPDB_TYPES; 397 398typedef struct _PDB_SYMBOL_RANGE 399{ 400 unsigned short segment; 401 unsigned short pad1; 402 unsigned long offset; 403 unsigned long size; 404 unsigned long characteristics; 405 unsigned short index; 406 unsigned short pad2; 407 408} PDB_SYMBOL_RANGE, *PPDB_SYMBOL_RANGE; 409 410typedef struct _PDB_SYMBOL_RANGE_EX 411{ 412 unsigned short segment; 413 unsigned short pad1; 414 unsigned long offset; 415 unsigned long size; 416 unsigned long characteristics; 417 unsigned short index; 418 unsigned short pad2; 419 unsigned long timestamp; 420 unsigned long unknown; 421 422} PDB_SYMBOL_RANGE_EX, *PPDB_SYMBOL_RANGE_EX; 423 424typedef struct _PDB_SYMBOL_FILE 425{ 426 unsigned long unknown1; 427 PDB_SYMBOL_RANGE range; 428 unsigned short flag; 429 unsigned short file; 430 unsigned long symbol_size; 431 unsigned long lineno_size; 432 unsigned long unknown2; 433 unsigned long nSrcFiles; 434 unsigned long attribute; 435 char filename[ 1 ]; 436 437} PDB_SYMBOL_FILE, *PPDB_SYMBOL_FILE; 438 439typedef struct _PDB_SYMBOL_FILE_EX 440{ 441 unsigned long unknown1; 442 PDB_SYMBOL_RANGE_EX range; 443 unsigned short flag; 444 unsigned short file; 445 unsigned long symbol_size; 446 unsigned long lineno_size; 447 unsigned long unknown2; 448 unsigned long nSrcFiles; 449 unsigned long attribute; 450 unsigned long reserved[ 2 ]; 451 char filename[ 1 ]; 452 453} PDB_SYMBOL_FILE_EX, *PPDB_SYMBOL_FILE_EX; 454 455typedef struct _PDB_SYMBOL_SOURCE 456{ 457 unsigned short nModules; 458 unsigned short nSrcFiles; 459 unsigned short table[ 1 ]; 460 461} PDB_SYMBOL_SOURCE, *PPDB_SYMBOL_SOURCE; 462 463typedef struct _PDB_SYMBOL_IMPORT 464{ 465 unsigned long unknown1; 466 unsigned long unknown2; 467 unsigned long TimeDateStamp; 468 unsigned long nRequests; 469 char filename[ 1 ]; 470 471} PDB_SYMBOL_IMPORT, *PPDB_SYMBOL_IMPORT; 472 473typedef struct _PDB_SYMBOLS_OLD 474{ 475 unsigned short hash1_file; 476 unsigned short hash2_file; 477 unsigned short gsym_file; 478 unsigned short pad; 479 unsigned long module_size; 480 unsigned long offset_size; 481 unsigned long hash_size; 482 unsigned long srcmodule_size; 483 484} PDB_SYMBOLS_OLD, *PPDB_SYMBOLS_OLD; 485 486typedef struct _PDB_SYMBOLS 487{ 488 unsigned long signature; 489 unsigned long version; 490 unsigned long unknown; 491 unsigned long hash1_file; 492 unsigned long hash2_file; 493 unsigned long gsym_file; 494 unsigned long module_size; 495 unsigned long offset_size; 496 unsigned long hash_size; 497 unsigned long srcmodule_size; 498 unsigned long pdbimport_size; 499 unsigned long resvd[ 5 ]; 500 501} PDB_SYMBOLS, *PPDB_SYMBOLS; 502#pragma pack() 503 504/*======================================================================== 505 * Process CodeView symbol information. 506 */ 507 508/* from wine-1.0/include/wine/mscvpdb.h */ 509 510struct p_string /* "Pascal string": prefixed by byte containing length */ 511{ 512 unsigned char namelen; 513 char name[1]; 514}; 515/* The other kind of "char name[1]" is a "C++ string" terminated by '\0'. 516 * "Name mangling" to encode type information often exceeds 255 bytes. 517 * Instead of using a 2-byte explicit length, they save one byte of space 518 * but incur a strlen(). This is justified by other code that wants 519 * a "C string" [terminated by '\0'] anyway. 520 */ 521 522union codeview_symbol 523{ 524 struct 525 { 526 short int len; 527 short int id; 528 } generic; 529 530 struct 531 { 532 short int len; 533 short int id; 534 unsigned int offset; 535 unsigned short segment; 536 unsigned short symtype; 537 struct p_string p_name; 538 } data_v1; 539 540 struct 541 { 542 short int len; 543 short int id; 544 unsigned int symtype; 545 unsigned int offset; 546 unsigned short segment; 547 struct p_string p_name; 548 } data_v2; 549 550 struct 551 { 552 short int len; 553 short int id; 554 unsigned int symtype; 555 unsigned int offset; 556 unsigned short segment; 557 char name[1]; /* terminated by '\0' */ 558 } data_v3; 559 560 struct 561 { 562 short int len; 563 short int id; 564 unsigned int pparent; 565 unsigned int pend; 566 unsigned int next; 567 unsigned int offset; 568 unsigned short segment; 569 unsigned short thunk_len; 570 unsigned char thtype; 571 struct p_string p_name; 572 } thunk_v1; 573 574 struct 575 { 576 short int len; 577 short int id; 578 unsigned int pparent; 579 unsigned int pend; 580 unsigned int next; 581 unsigned int offset; 582 unsigned short segment; 583 unsigned short thunk_len; 584 unsigned char thtype; 585 char name[1]; /* terminated by '\0' */ 586 } thunk_v3; 587 588 struct 589 { 590 short int len; 591 short int id; 592 unsigned int pparent; 593 unsigned int pend; 594 unsigned int next; 595 unsigned int proc_len; 596 unsigned int debug_start; 597 unsigned int debug_end; 598 unsigned int offset; 599 unsigned short segment; 600 unsigned short proctype; 601 unsigned char flags; 602 struct p_string p_name; 603 } proc_v1; 604 605 struct 606 { 607 short int len; 608 short int id; 609 unsigned int pparent; 610 unsigned int pend; 611 unsigned int next; 612 unsigned int proc_len; 613 unsigned int debug_start; 614 unsigned int debug_end; 615 unsigned int proctype; 616 unsigned int offset; 617 unsigned short segment; 618 unsigned char flags; 619 struct p_string p_name; 620 } proc_v2; 621 622 struct 623 { 624 short int len; 625 short int id; 626 unsigned int pparent; 627 unsigned int pend; 628 unsigned int next; 629 unsigned int proc_len; 630 unsigned int debug_start; 631 unsigned int debug_end; 632 unsigned int proctype; 633 unsigned int offset; 634 unsigned short segment; 635 unsigned char flags; 636 char name[1]; /* terminated by '\0' */ 637 } proc_v3; 638 639 struct 640 { 641 short int len; 642 short int id; 643 unsigned int symtype; 644 unsigned int offset; 645 unsigned short segment; 646 struct p_string p_name; 647 } public_v2; 648 649 struct 650 { 651 short int len; 652 short int id; 653 unsigned int symtype; 654 unsigned int offset; 655 unsigned short segment; 656 char name[1]; /* terminated by '\0' */ 657 } public_v3; 658 659 struct 660 { 661 short int len; /* Total length of this entry */ 662 short int id; /* Always S_BPREL_V1 */ 663 unsigned int offset; /* Stack offset relative to BP */ 664 unsigned short symtype; 665 struct p_string p_name; 666 } stack_v1; 667 668 struct 669 { 670 short int len; /* Total length of this entry */ 671 short int id; /* Always S_BPREL_V2 */ 672 unsigned int offset; /* Stack offset relative to EBP */ 673 unsigned int symtype; 674 struct p_string p_name; 675 } stack_v2; 676 677 struct 678 { 679 short int len; /* Total length of this entry */ 680 short int id; /* Always S_BPREL_V3 */ 681 int offset; /* Stack offset relative to BP */ 682 unsigned int symtype; 683 char name[1]; /* terminated by '\0' */ 684 } stack_v3; 685 686 struct 687 { 688 short int len; /* Total length of this entry */ 689 short int id; /* Always S_BPREL_V3 */ 690 int offset; /* Stack offset relative to BP */ 691 unsigned int symtype; 692 unsigned short unknown; 693 char name[1]; /* terminated by '\0' */ 694 } stack_xxxx_v3; 695 696 struct 697 { 698 short int len; /* Total length of this entry */ 699 short int id; /* Always S_REGISTER */ 700 unsigned short type; 701 unsigned short reg; 702 struct p_string p_name; 703 /* don't handle register tracking */ 704 } register_v1; 705 706 struct 707 { 708 short int len; /* Total length of this entry */ 709 short int id; /* Always S_REGISTER_V2 */ 710 unsigned int type; /* check whether type & reg are correct */ 711 unsigned short reg; 712 struct p_string p_name; 713 /* don't handle register tracking */ 714 } register_v2; 715 716 struct 717 { 718 short int len; /* Total length of this entry */ 719 short int id; /* Always S_REGISTER_V3 */ 720 unsigned int type; /* check whether type & reg are correct */ 721 unsigned short reg; 722 char name[1]; /* terminated by '\0' */ 723 /* don't handle register tracking */ 724 } register_v3; 725 726 struct 727 { 728 short int len; 729 short int id; 730 unsigned int parent; 731 unsigned int end; 732 unsigned int length; 733 unsigned int offset; 734 unsigned short segment; 735 struct p_string p_name; 736 } block_v1; 737 738 struct 739 { 740 short int len; 741 short int id; 742 unsigned int parent; 743 unsigned int end; 744 unsigned int length; 745 unsigned int offset; 746 unsigned short segment; 747 char name[1]; /* terminated by '\0' */ 748 } block_v3; 749 750 struct 751 { 752 short int len; 753 short int id; 754 unsigned int offset; 755 unsigned short segment; 756 unsigned char flags; 757 struct p_string p_name; 758 } label_v1; 759 760 struct 761 { 762 short int len; 763 short int id; 764 unsigned int offset; 765 unsigned short segment; 766 unsigned char flags; 767 char name[1]; /* terminated by '\0' */ 768 } label_v3; 769 770 struct 771 { 772 short int len; 773 short int id; 774 unsigned short type; 775 unsigned short cvalue; /* numeric leaf */ 776#if 0 777 struct p_string p_name; 778#endif 779 } constant_v1; 780 781 struct 782 { 783 short int len; 784 short int id; 785 unsigned type; 786 unsigned short cvalue; /* numeric leaf */ 787#if 0 788 struct p_string p_name; 789#endif 790 } constant_v2; 791 792 struct 793 { 794 short int len; 795 short int id; 796 unsigned type; 797 unsigned short cvalue; 798#if 0 799 char name[1]; /* terminated by '\0' */ 800#endif 801 } constant_v3; 802 803 struct 804 { 805 short int len; 806 short int id; 807 unsigned short type; 808 struct p_string p_name; 809 } udt_v1; 810 811 struct 812 { 813 short int len; 814 short int id; 815 unsigned type; 816 struct p_string p_name; 817 } udt_v2; 818 819 struct 820 { 821 short int len; 822 short int id; 823 unsigned int type; 824 char name[1]; /* terminated by '\0' */ 825 } udt_v3; 826 827 struct 828 { 829 short int len; 830 short int id; 831 char signature[4]; 832 struct p_string p_name; 833 } objname_v1; 834 835 struct 836 { 837 short int len; 838 short int id; 839 unsigned int unknown; 840 struct p_string p_name; 841 } compiland_v1; 842 843 struct 844 { 845 short int len; 846 short int id; 847 unsigned unknown1[4]; 848 unsigned short unknown2; 849 struct p_string p_name; 850 } compiland_v2; 851 852 struct 853 { 854 short int len; 855 short int id; 856 unsigned int unknown; 857 char name[1]; /* terminated by '\0' */ 858 } compiland_v3; 859 860 struct 861 { 862 short int len; 863 short int id; 864 unsigned int offset; 865 unsigned short segment; 866 } ssearch_v1; 867}; 868 869#define S_COMPILAND_V1 0x0001 870#define S_REGISTER_V1 0x0002 871#define S_CONSTANT_V1 0x0003 872#define S_UDT_V1 0x0004 873#define S_SSEARCH_V1 0x0005 874#define S_END_V1 0x0006 875#define S_SKIP_V1 0x0007 876#define S_CVRESERVE_V1 0x0008 877#define S_OBJNAME_V1 0x0009 878#define S_ENDARG_V1 0x000a 879#define S_COBOLUDT_V1 0x000b 880#define S_MANYREG_V1 0x000c 881#define S_RETURN_V1 0x000d 882#define S_ENTRYTHIS_V1 0x000e 883 884#define S_BPREL_V1 0x0200 885#define S_LDATA_V1 0x0201 886#define S_GDATA_V1 0x0202 887#define S_PUB_V1 0x0203 888#define S_LPROC_V1 0x0204 889#define S_GPROC_V1 0x0205 890#define S_THUNK_V1 0x0206 891#define S_BLOCK_V1 0x0207 892#define S_WITH_V1 0x0208 893#define S_LABEL_V1 0x0209 894#define S_CEXMODEL_V1 0x020a 895#define S_VFTPATH_V1 0x020b 896#define S_REGREL_V1 0x020c 897#define S_LTHREAD_V1 0x020d 898#define S_GTHREAD_V1 0x020e 899 900#define S_PROCREF_V1 0x0400 901#define S_DATAREF_V1 0x0401 902#define S_ALIGN_V1 0x0402 903#define S_LPROCREF_V1 0x0403 904 905#define S_REGISTER_V2 0x1001 /* Variants with new 32-bit type indices */ 906#define S_CONSTANT_V2 0x1002 907#define S_UDT_V2 0x1003 908#define S_COBOLUDT_V2 0x1004 909#define S_MANYREG_V2 0x1005 910#define S_BPREL_V2 0x1006 911#define S_LDATA_V2 0x1007 912#define S_GDATA_V2 0x1008 913#define S_PUB_V2 0x1009 914#define S_LPROC_V2 0x100a 915#define S_GPROC_V2 0x100b 916#define S_VFTTABLE_V2 0x100c 917#define S_REGREL_V2 0x100d 918#define S_LTHREAD_V2 0x100e 919#define S_GTHREAD_V2 0x100f 920#if 0 921#define S_XXXXXXXXX_32 0x1012 /* seems linked to a function, content unknown */ 922#endif 923#define S_COMPILAND_V2 0x1013 924 925#define S_COMPILAND_V3 0x1101 926#define S_THUNK_V3 0x1102 927#define S_BLOCK_V3 0x1103 928#define S_LABEL_V3 0x1105 929#define S_REGISTER_V3 0x1106 930#define S_CONSTANT_V3 0x1107 931#define S_UDT_V3 0x1108 932#define S_BPREL_V3 0x110B 933#define S_LDATA_V3 0x110C 934#define S_GDATA_V3 0x110D 935#define S_PUB_V3 0x110E 936#define S_LPROC_V3 0x110F 937#define S_GPROC_V3 0x1110 938#define S_BPREL_XXXX_V3 0x1111 /* not really understood, but looks like bprel... */ 939#define S_MSTOOL_V3 0x1116 /* compiler command line options and build information */ 940#define S_PUB_FUNC1_V3 0x1125 /* didn't get the difference between the two */ 941#define S_PUB_FUNC2_V3 0x1127 942 943 944/*------------------------------------------------------------*/ 945/*--- ---*/ 946/*--- pdb-reading: bits and pieces ---*/ 947/*--- ---*/ 948/*------------------------------------------------------------*/ 949 950struct pdb_reader 951{ 952 void* (*read_file)(struct pdb_reader*, unsigned, unsigned *); 953 // JRS 2009-Apr-8: .uu_n_pdbimage is never used. 954 UChar* pdbimage; // image address 955 SizeT uu_n_pdbimage; // size 956 union { 957 struct { 958 struct PDB_JG_HEADER* header; 959 struct PDB_JG_TOC* toc; 960 } jg; 961 struct { 962 struct PDB_DS_HEADER* header; 963 struct PDB_DS_TOC* toc; 964 } ds; 965 } u; 966}; 967 968 969static void* pdb_ds_read( struct pdb_reader* pdb, 970 unsigned* block_list, 971 unsigned size ) 972{ 973 unsigned blocksize, nBlocks; 974 UChar* buffer; 975 UInt i; 976 977 if (!size) return NULL; 978 if (size > 512 * 1024 * 1024) { 979 VG_(umsg)("Warning: pdb_ds_read: implausible size " 980 "(%u); skipping -- possible invalid .pdb file?\n", size); 981 return NULL; 982 } 983 984 blocksize = pdb->u.ds.header->block_size; 985 nBlocks = (size + blocksize - 1) / blocksize; 986 buffer = ML_(dinfo_zalloc)("di.readpe.pdr.1", nBlocks * blocksize); 987 for (i = 0; i < nBlocks; i++) 988 VG_(memcpy)( buffer + i * blocksize, 989 pdb->pdbimage + block_list[i] * blocksize, 990 blocksize ); 991 return buffer; 992} 993 994 995static void* pdb_jg_read( struct pdb_reader* pdb, 996 unsigned short* block_list, 997 int size ) 998{ 999 unsigned blocksize, nBlocks; 1000 UChar* buffer; 1001 UInt i; 1002 //VG_(printf)("pdb_read %p %p %d\n", pdb, block_list, size); 1003 if ( !size ) return NULL; 1004 1005 blocksize = pdb->u.jg.header->blocksize; 1006 nBlocks = (size + blocksize-1) / blocksize; 1007 buffer = ML_(dinfo_zalloc)("di.readpe.pjr.1", nBlocks * blocksize); 1008 for ( i = 0; i < nBlocks; i++ ) 1009 VG_(memcpy)( buffer + i*blocksize, 1010 pdb->pdbimage + block_list[i]*blocksize, blocksize ); 1011 return buffer; 1012} 1013 1014 1015static void* find_pdb_header( void* pdbimage, 1016 unsigned* signature ) 1017{ 1018 static const HChar pdbtxt[]= "Microsoft C/C++"; 1019 HChar* txteof = VG_(strchr)(pdbimage, '\032'); 1020 if (! txteof) 1021 return NULL; 1022 if (0!=VG_(strncmp)(pdbimage, pdbtxt, -1+ sizeof(pdbtxt))) 1023 return NULL; 1024 1025 *signature = *(unsigned*)(1+ txteof); 1026 HChar *img_addr = pdbimage; // so we can do address arithmetic 1027 return ((~3& (3+ (4+ 1+ (txteof - img_addr)))) + img_addr); 1028} 1029 1030 1031static void* pdb_ds_read_file( struct pdb_reader* reader, 1032 unsigned file_number, 1033 unsigned* plength ) 1034{ 1035 unsigned i, *block_list; 1036 if (!reader->u.ds.toc || file_number >= reader->u.ds.toc->num_files) 1037 return NULL; 1038 if (reader->u.ds.toc->file_size[file_number] == 0 1039 || reader->u.ds.toc->file_size[file_number] == 0xFFFFFFFF) 1040 return NULL; 1041 1042 block_list 1043 = reader->u.ds.toc->file_size + reader->u.ds.toc->num_files; 1044 for (i = 0; i < file_number; i++) 1045 block_list += (reader->u.ds.toc->file_size[i] 1046 + reader->u.ds.header->block_size - 1) 1047 / 1048 reader->u.ds.header->block_size; 1049 if (plength) 1050 *plength = reader->u.ds.toc->file_size[file_number]; 1051 return pdb_ds_read( reader, block_list, 1052 reader->u.ds.toc->file_size[file_number]); 1053} 1054 1055 1056static void* pdb_jg_read_file( struct pdb_reader* pdb, 1057 unsigned fileNr, 1058 unsigned *plength ) 1059{ 1060 //VG_(printf)("pdb_read_file %p %d\n", pdb, fileNr); 1061 unsigned blocksize = pdb->u.jg.header->blocksize; 1062 struct PDB_JG_TOC* toc = pdb->u.jg.toc; 1063 unsigned i; 1064 unsigned short* block_list; 1065 1066 if ( !toc || fileNr >= toc->nFiles ) 1067 return NULL; 1068 1069 block_list 1070 = (unsigned short *) &toc->file[ toc->nFiles ]; 1071 for ( i = 0; i < fileNr; i++ ) 1072 block_list += (toc->file[i].size + blocksize-1) / blocksize; 1073 1074 if (plength) 1075 *plength = toc->file[fileNr].size; 1076 return pdb_jg_read( pdb, block_list, toc->file[fileNr].size ); 1077} 1078 1079 1080static void pdb_ds_init( struct pdb_reader * reader, 1081 UChar* pdbimage, 1082 SizeT n_pdbimage ) 1083{ 1084 reader->read_file = pdb_ds_read_file; 1085 reader->pdbimage = pdbimage; 1086 reader->uu_n_pdbimage = n_pdbimage; 1087 reader->u.ds.toc 1088 = pdb_ds_read( 1089 reader, 1090 (unsigned*)(reader->u.ds.header->block_size 1091 * reader->u.ds.header->toc_page 1092 + reader->pdbimage), 1093 reader->u.ds.header->toc_size 1094 ); 1095} 1096 1097 1098static void pdb_jg_init( struct pdb_reader* reader, 1099 void* pdbimage, 1100 unsigned n_pdbimage ) 1101{ 1102 reader->read_file = pdb_jg_read_file; 1103 reader->pdbimage = pdbimage; 1104 reader->uu_n_pdbimage = n_pdbimage; 1105 reader->u.jg.toc = pdb_jg_read(reader, 1106 reader->u.jg.header->toc_block, 1107 reader->u.jg.header->toc.size); 1108} 1109 1110 1111 1112 1113static 1114void pdb_check_root_version_and_timestamp( HChar* pdbname, 1115 ULong pdbmtime, 1116 unsigned version, 1117 UInt TimeDateStamp ) 1118{ 1119 switch ( version ) { 1120 case 19950623: /* VC 4.0 */ 1121 case 19950814: 1122 case 19960307: /* VC 5.0 */ 1123 case 19970604: /* VC 6.0 */ 1124 case 20000404: /* VC 7.0 FIXME?? */ 1125 break; 1126 default: 1127 if (VG_(clo_verbosity) > 1) 1128 VG_(message)(Vg_UserMsg, 1129 "Unknown .pdb root block version %d\n", version ); 1130 } 1131 if ( TimeDateStamp != pdbmtime ) { 1132 if (VG_(clo_verbosity) > 1) 1133 VG_(message)(Vg_UserMsg, 1134 "Wrong time stamp of .PDB file %s (0x%08x, 0x%08llx)\n", 1135 pdbname, TimeDateStamp, pdbmtime ); 1136 } 1137} 1138 1139 1140static DWORD pdb_get_file_size( struct pdb_reader* reader, unsigned idx ) 1141{ 1142 if (reader->read_file == pdb_jg_read_file) 1143 return reader->u.jg.toc->file[idx].size; 1144 else 1145 return reader->u.ds.toc->file_size[idx]; 1146} 1147 1148 1149static void pdb_convert_types_header( PDB_TYPES *types, char* image ) 1150{ 1151 VG_(memset)( types, 0, sizeof(PDB_TYPES) ); 1152 if ( !image ) 1153 return; 1154 if ( *(unsigned long *)image < 19960000 ) { /* FIXME: correct version? */ 1155 /* Old version of the types record header */ 1156 PDB_TYPES_OLD *old = (PDB_TYPES_OLD *)image; 1157 types->version = old->version; 1158 types->type_offset = sizeof(PDB_TYPES_OLD); 1159 types->type_size = old->type_size; 1160 types->first_index = old->first_index; 1161 types->last_index = old->last_index; 1162 types->file = old->file; 1163 } else { 1164 /* New version of the types record header */ 1165 *types = *(PDB_TYPES *)image; 1166 } 1167} 1168 1169 1170static void pdb_convert_symbols_header( PDB_SYMBOLS *symbols, 1171 int *header_size, char* image ) 1172{ 1173 VG_(memset)( symbols, 0, sizeof(PDB_SYMBOLS) ); 1174 if ( !image ) 1175 return; 1176 if ( *(unsigned long *)image != 0xffffffff ) { 1177 /* Old version of the symbols record header */ 1178 PDB_SYMBOLS_OLD *old = (PDB_SYMBOLS_OLD *)image; 1179 symbols->version = 0; 1180 symbols->module_size = old->module_size; 1181 symbols->offset_size = old->offset_size; 1182 symbols->hash_size = old->hash_size; 1183 symbols->srcmodule_size = old->srcmodule_size; 1184 symbols->pdbimport_size = 0; 1185 symbols->hash1_file = old->hash1_file; 1186 symbols->hash2_file = old->hash2_file; 1187 symbols->gsym_file = old->gsym_file; 1188 *header_size = sizeof(PDB_SYMBOLS_OLD); 1189 } else { 1190 /* New version of the symbols record header */ 1191 *symbols = *(PDB_SYMBOLS *)image; 1192 *header_size = sizeof(PDB_SYMBOLS); 1193 } 1194} 1195 1196 1197/*------------------------------------------------------------*/ 1198/*--- ---*/ 1199/*--- Main stuff: reading of symbol addresses ---*/ 1200/*--- ---*/ 1201/*------------------------------------------------------------*/ 1202 1203static ULong DEBUG_SnarfCodeView( 1204 DebugInfo* di, 1205 PtrdiffT bias, 1206 IMAGE_SECTION_HEADER* sectp, 1207 void* root, /* FIXME: better name */ 1208 Int offset, 1209 Int size 1210 ) 1211{ 1212 Int i, length; 1213 DiSym vsym; 1214 HChar* nmstr; 1215 HChar symname[4096 /*WIN32_PATH_MAX*/]; 1216 1217 Bool debug = di->trace_symtab; 1218 ULong n_syms_read = 0; 1219 1220 if (debug) 1221 VG_(message)(Vg_UserMsg, 1222 "BEGIN SnarfCodeView addr=%p offset=%d length=%d\n", 1223 root, offset, size ); 1224 1225 VG_(memset)(&vsym, 0, sizeof(vsym)); /* avoid holes */ 1226 /* 1227 * Loop over the different types of records and whenever we 1228 * find something we are interested in, record it and move on. 1229 */ 1230 for ( i = offset; i < size; i += length ) 1231 { 1232 union codeview_symbol *sym = (union codeview_symbol *)((char *)root + i); 1233 1234 length = sym->generic.len + 2; 1235 1236 //VG_(printf)("id=%x len=%d\n", sym->generic.id, length); 1237 switch ( sym->generic.id ) { 1238 1239 default: 1240 if (0) { 1241 VG_(printf)("unknown id 0x%x len=0x%x at %p\n", 1242 sym->generic.id, sym->generic.len, sym); 1243 VG_(printf)(" %8x %8x %8x %8x\n", 1244 ((int *)sym)[1],((int *)sym)[2], 1245 ((int *)sym)[3],((int *)sym)[4]); 1246 VG_(printf)(" %8x %8x %8x %8x\n", 1247 ((int *)sym)[5],((int *)sym)[6], 1248 ((int *)sym)[7],((int *)sym)[8]); 1249 } 1250 break; 1251 /* 1252 * Global and local data symbols. We don't associate these 1253 * with any given source file. 1254 */ 1255 case S_GDATA_V1: 1256 case S_LDATA_V1: 1257 case S_PUB_V1: 1258 VG_(memcpy)(symname, sym->data_v1.p_name.name, 1259 sym->data_v1.p_name.namelen); 1260 symname[sym->data_v1.p_name.namelen] = '\0'; 1261 1262 if (debug) 1263 VG_(message)(Vg_UserMsg, " Data %s\n", symname ); 1264 1265 if (0 /*VG_(needs).data_syms*/) { 1266 nmstr = ML_(addStr)(di, symname, sym->data_v1.p_name.namelen); 1267 vsym.addr = bias + sectp[sym->data_v1.segment-1].VirtualAddress 1268 + sym->data_v1.offset; 1269 vsym.tocptr = 0; 1270 vsym.pri_name = nmstr; 1271 vsym.sec_names = NULL; 1272 vsym.size = sym->data_v1.p_name.namelen; 1273 // FIXME: .namelen is sizeof(.data) including .name[] 1274 vsym.isText = (sym->generic.id == S_PUB_V1); 1275 vsym.isIFunc = False; 1276 ML_(addSym)( di, &vsym ); 1277 n_syms_read++; 1278 } 1279 break; 1280 case S_GDATA_V2: 1281 case S_LDATA_V2: 1282 case S_PUB_V2: { 1283 Int const k = sym->data_v2.p_name.namelen; 1284 VG_(memcpy)(symname, sym->data_v2.p_name.name, k); 1285 symname[k] = '\0'; 1286 1287 if (debug) 1288 VG_(message)(Vg_UserMsg, 1289 " S_GDATA_V2/S_LDATA_V2/S_PUB_V2 %s\n", symname ); 1290 1291 if (sym->generic.id==S_PUB_V2 /*VG_(needs).data_syms*/) { 1292 nmstr = ML_(addStr)(di, symname, k); 1293 vsym.addr = bias + sectp[sym->data_v2.segment-1].VirtualAddress 1294 + sym->data_v2.offset; 1295 vsym.tocptr = 0; 1296 vsym.pri_name = nmstr; 1297 vsym.sec_names = NULL; 1298 vsym.size = 4000; 1299 // FIXME: data_v2.len is sizeof(.data), 1300 // not size of function! 1301 vsym.isText = !!(IMAGE_SCN_CNT_CODE 1302 & sectp[sym->data_v2.segment-1].Characteristics); 1303 vsym.isIFunc = False; 1304 ML_(addSym)( di, &vsym ); 1305 n_syms_read++; 1306 } 1307 break; 1308 } 1309 case S_PUB_V3: 1310 /* not completely sure of those two anyway */ 1311 case S_PUB_FUNC1_V3: 1312 case S_PUB_FUNC2_V3: { 1313 Int k = sym->public_v3.len - (-1+ sizeof(sym->public_v3)); 1314 if ((-1+ sizeof(symname)) < k) 1315 k = -1+ sizeof(symname); 1316 VG_(memcpy)(symname, sym->public_v3.name, k); 1317 symname[k] = '\0'; 1318 1319 if (debug) 1320 VG_(message)(Vg_UserMsg, 1321 " S_PUB_FUNC1_V3/S_PUB_FUNC2_V3/S_PUB_V3 %s\n", 1322 symname ); 1323 1324 if (1 /*sym->generic.id==S_PUB_FUNC1_V3 1325 || sym->generic.id==S_PUB_FUNC2_V3*/) { 1326 nmstr = ML_(addStr)(di, symname, k); 1327 vsym.addr = bias + sectp[sym->public_v3.segment-1].VirtualAddress 1328 + sym->public_v3.offset; 1329 vsym.tocptr = 0; 1330 vsym.pri_name = nmstr; 1331 vsym.sec_names = NULL; 1332 vsym.size = 4000; 1333 // FIXME: public_v3.len is not length of the 1334 // .text of the function 1335 vsym.isText = !!(IMAGE_SCN_CNT_CODE 1336 & sectp[sym->data_v2.segment-1].Characteristics); 1337 vsym.isIFunc = False; 1338 ML_(addSym)( di, &vsym ); 1339 n_syms_read++; 1340 } 1341 break; 1342 } 1343 1344 /* 1345 * Sort of like a global function, but it just points 1346 * to a thunk, which is a stupid name for what amounts to 1347 * a PLT slot in the normal jargon that everyone else uses. 1348 */ 1349 case S_THUNK_V3: 1350 case S_THUNK_V1: 1351 /* valgrind ignores PLTs */ /* JRS: it does? */ 1352 break; 1353 1354 /* 1355 * Global and static functions. 1356 */ 1357 case S_GPROC_V1: 1358 case S_LPROC_V1: 1359 VG_(memcpy)(symname, sym->proc_v1.p_name.name, 1360 sym->proc_v1.p_name.namelen); 1361 symname[sym->proc_v1.p_name.namelen] = '\0'; 1362 nmstr = ML_(addStr)(di, symname, sym->proc_v1.p_name.namelen); 1363 vsym.addr = bias + sectp[sym->proc_v1.segment-1].VirtualAddress 1364 + sym->proc_v1.offset; 1365 vsym.tocptr = 0; 1366 vsym.pri_name = nmstr; 1367 vsym.sec_names = NULL; 1368 vsym.size = sym->proc_v1.proc_len; 1369 vsym.isText = True; 1370 vsym.isIFunc = False; 1371 if (debug) 1372 VG_(message)(Vg_UserMsg, 1373 " Adding function %s addr=%#lx length=%d\n", 1374 symname, vsym.addr, vsym.size ); 1375 ML_(addSym)( di, &vsym ); 1376 n_syms_read++; 1377 break; 1378 1379 case S_GPROC_V2: 1380 case S_LPROC_V2: 1381 VG_(memcpy)(symname, sym->proc_v2.p_name.name, 1382 sym->proc_v2.p_name.namelen); 1383 symname[sym->proc_v2.p_name.namelen] = '\0'; 1384 nmstr = ML_(addStr)(di, symname, sym->proc_v2.p_name.namelen); 1385 vsym.addr = bias + sectp[sym->proc_v2.segment-1].VirtualAddress 1386 + sym->proc_v2.offset; 1387 vsym.tocptr = 0; 1388 vsym.pri_name = nmstr; 1389 vsym.sec_names = NULL; 1390 vsym.size = sym->proc_v2.proc_len; 1391 vsym.isText = True; 1392 vsym.isIFunc = False; 1393 if (debug) 1394 VG_(message)(Vg_UserMsg, 1395 " Adding function %s addr=%#lx length=%d\n", 1396 symname, vsym.addr, vsym.size ); 1397 ML_(addSym)( di, &vsym ); 1398 n_syms_read++; 1399 break; 1400 case S_LPROC_V3: 1401 case S_GPROC_V3: { 1402 if (debug) 1403 VG_(message)(Vg_UserMsg, 1404 " S_LPROC_V3/S_GPROC_V3 %s\n", sym->proc_v3.name ); 1405 1406 if (1) { 1407 nmstr = ML_(addStr)(di, sym->proc_v3.name, 1408 VG_(strlen)(sym->proc_v3.name)); 1409 vsym.addr = bias + sectp[sym->proc_v3.segment-1].VirtualAddress 1410 + sym->proc_v3.offset; 1411 vsym.tocptr = 0; 1412 vsym.pri_name = nmstr; 1413 vsym.sec_names = NULL; 1414 vsym.size = sym->proc_v3.proc_len; 1415 vsym.isText = 1; 1416 vsym.isIFunc = False; 1417 ML_(addSym)( di, &vsym ); 1418 n_syms_read++; 1419 } 1420 break; 1421 } 1422 /* JRS: how is flow supposed to arrive at commented out code below? */ 1423 //if (nest_block) 1424 //{ 1425 // printf(">>> prev func '%s' still has nest_block %u count\n", 1426 // curr_func, nest_block); 1427 // nest_block = 0; 1428 //} 1429 //curr_func = strdup(sym->proc_v3.name); 1430 /* EPP unsigned int pparent; */ 1431 /* EPP unsigned int pend; */ 1432 /* EPP unsigned int next; */ 1433 /* EPP unsigned int debug_start; */ 1434 /* EPP unsigned int debug_end; */ 1435 /* EPP unsigned char flags; */ 1436 // break; 1437 1438 1439 /* 1440 * Function parameters and stack variables. 1441 */ 1442 case S_BPREL_XXXX_V3: 1443 case S_BPREL_V3: 1444 case S_BPREL_V2: 1445 case S_BPREL_V1: 1446 /* ignored */ 1447 break; 1448 1449 case S_LABEL_V3: // FIXME 1450 case S_LABEL_V1: 1451 break; 1452 1453 case S_SSEARCH_V1: 1454 case S_ALIGN_V1: 1455 case S_MSTOOL_V3: 1456 case S_UDT_V3: 1457 case S_UDT_V2: 1458 case S_UDT_V1: 1459 case S_CONSTANT_V3: 1460 case S_CONSTANT_V1: 1461 case S_OBJNAME_V1: 1462 case S_END_V1: 1463 case S_COMPILAND_V3: 1464 case S_COMPILAND_V2: 1465 case S_COMPILAND_V1: 1466 case S_BLOCK_V3: 1467 case S_BLOCK_V1: 1468 case S_REGISTER_V3: 1469 case S_REGISTER_V2: 1470 case S_REGISTER_V1: 1471 /* ignored */ 1472 break; 1473 1474 /* 1475 * These are special, in that they are always followed by an 1476 * additional length-prefixed string which is *not* included 1477 * into the symbol length count. We need to skip it. 1478 */ 1479 case S_PROCREF_V1: 1480 case S_DATAREF_V1: 1481 case S_LPROCREF_V1: { 1482 unsigned char *name = (unsigned char *)sym + length; 1483 length += (*name + 1 + 3) & ~3; 1484 break; 1485 } 1486 } /* switch ( sym->generic.id ) */ 1487 1488 } /* for ( i = offset; i < size; i += length ) */ 1489 1490 if (debug) 1491 VG_(message)(Vg_UserMsg, 1492 "END SnarfCodeView addr=%p offset=%d length=%d\n", 1493 root, offset, size ); 1494 return n_syms_read; 1495} 1496 1497 1498/*------------------------------------------------------------*/ 1499/*--- ---*/ 1500/*--- Main stuff: reading of line number tables ---*/ 1501/*--- ---*/ 1502/*------------------------------------------------------------*/ 1503 1504union any_size 1505{ 1506 char const *c; 1507 short const *s; 1508 int const *i; 1509 unsigned int const *ui; 1510}; 1511 1512struct startend 1513{ 1514 unsigned int start; 1515 unsigned int end; 1516}; 1517 1518static ULong DEBUG_SnarfLinetab( 1519 DebugInfo* di, 1520 PtrdiffT bias, 1521 IMAGE_SECTION_HEADER* sectp, 1522 void* linetab, 1523 Int size 1524 ) 1525{ 1526 //VG_(printf)("DEBUG_SnarfLinetab %p %p %p %d\n", di, sectp, linetab, size); 1527 Int file_segcount; 1528 HChar filename[WIN32_PATH_MAX]; 1529 const UInt * filetab; 1530 const UChar * fn; 1531 Int i; 1532 Int k; 1533 const UInt * lt_ptr; 1534 Int nfile; 1535 Int nseg; 1536 union any_size pnt; 1537 union any_size pnt2; 1538 const struct startend * start; 1539 Int this_seg; 1540 1541 Bool debug = di->trace_symtab; 1542 ULong n_lines_read = 0; 1543 1544 if (debug) 1545 VG_(message)(Vg_UserMsg, 1546 "BEGIN SnarfLineTab linetab=%p size=%d\n", 1547 linetab, size ); 1548 1549 /* 1550 * Now get the important bits. 1551 */ 1552 pnt.c = linetab; 1553 nfile = *pnt.s++; 1554 nseg = *pnt.s++; 1555 1556 filetab = pnt.ui; 1557 1558 /* 1559 * Now count up the number of segments in the file. 1560 */ 1561 nseg = 0; 1562 for (i = 0; i < nfile; i++) { 1563 pnt2.c = (HChar *)linetab + filetab[i]; 1564 nseg += *pnt2.s; 1565 } 1566 1567 this_seg = 0; 1568 for (i = 0; i < nfile; i++) { 1569 HChar *fnmstr; 1570 HChar *dirstr; 1571 1572 /* 1573 * Get the pointer into the segment information. 1574 */ 1575 pnt2.c = (HChar *)linetab + filetab[i]; 1576 file_segcount = *pnt2.s; 1577 1578 pnt2.ui++; 1579 lt_ptr = pnt2.ui; 1580 start = (const struct startend *) (lt_ptr + file_segcount); 1581 1582 /* 1583 * Now snarf the filename for all of the segments for this file. 1584 */ 1585 fn = (const UChar*) (start + file_segcount); 1586 /* fn now points at a Pascal-style string, that is, the first 1587 byte is the length, and the remaining up to 255 (presumably) 1588 are the contents. */ 1589 vg_assert(WIN32_PATH_MAX >= 256); 1590 VG_(memset)(filename, 0, sizeof(filename)); 1591 VG_(memcpy)(filename, fn + 1, *fn); 1592 vg_assert(filename[ sizeof(filename)-1 ] == 0); 1593 filename[(Int)*fn] = 0; 1594 fnmstr = VG_(strrchr)(filename, '\\'); 1595 if (fnmstr == NULL) 1596 fnmstr = filename; 1597 else 1598 ++fnmstr; 1599 k = VG_(strlen)(fnmstr); 1600 dirstr = ML_(addStr)(di, filename, *fn - k); 1601 fnmstr = ML_(addStr)(di, fnmstr, k); 1602 1603 for (k = 0; k < file_segcount; k++, this_seg++) { 1604 Int linecount; 1605 Int segno; 1606 1607 pnt2.c = (HChar *)linetab + lt_ptr[k]; 1608 1609 segno = *pnt2.s++; 1610 linecount = *pnt2.s++; 1611 1612 if ( linecount > 0 ) { 1613 UInt j; 1614 1615 if (debug) 1616 VG_(message)(Vg_UserMsg, 1617 " Adding %d lines for file %s segment %d addr=%#x end=%#x\n", 1618 linecount, filename, segno, start[k].start, start[k].end ); 1619 1620 for ( j = 0; j < linecount; j++ ) { 1621 Addr startaddr = bias + sectp[segno-1].VirtualAddress 1622 + pnt2.ui[j]; 1623 Addr endaddr = bias + sectp[segno-1].VirtualAddress 1624 + ((j < (linecount - 1)) 1625 ? pnt2.ui[j+1] 1626 : start[k].end); 1627 if (debug) 1628 VG_(message)(Vg_UserMsg, 1629 " Adding line %d addr=%#lx end=%#lx\n", 1630 ((const unsigned short *)(pnt2.ui + linecount))[j], 1631 startaddr, endaddr ); 1632 ML_(addLineInfo)( 1633 di, fnmstr, dirstr, startaddr, endaddr, 1634 ((const unsigned short *)(pnt2.ui + linecount))[j], j ); 1635 n_lines_read++; 1636 } 1637 } 1638 } 1639 } 1640 1641 if (debug) 1642 VG_(message)(Vg_UserMsg, 1643 "END SnarfLineTab linetab=%p size=%d\n", 1644 linetab, size ); 1645 1646 return n_lines_read; 1647} 1648 1649 1650 1651/* there's a new line tab structure from MS Studio 2005 and after 1652 * it's made of: 1653 * DWORD 000000f4 1654 * DWORD lineblk_offset (counting bytes after this field) 1655 * an array of codeview_linetab2_file structures 1656 * an array (starting at <lineblk_offset>) of codeview_linetab2_block structures 1657 */ 1658 1659struct codeview_linetab2_file 1660{ 1661 DWORD offset; /* offset in string table for filename */ 1662 WORD unk; /* always 0x0110... type of following 1663 information ??? */ 1664 BYTE md5[16]; /* MD5 signature of file (signature on 1665 file's content or name ???) */ 1666 WORD pad0; /* always 0 */ 1667}; 1668 1669struct codeview_linetab2_block 1670{ 1671 DWORD header; /* 0x000000f2 */ 1672 DWORD size_of_block; /* next block is at # bytes after this field */ 1673 DWORD start; /* start address of function with line numbers */ 1674 DWORD seg; /* segment of function with line numbers */ 1675 DWORD size; /* size of function with line numbers */ 1676 DWORD file_offset; /* offset for accessing corresponding 1677 codeview_linetab2_file */ 1678 DWORD nlines; /* number of lines in this block */ 1679 DWORD size_lines; /* number of bytes following for line 1680 number information */ 1681 struct { 1682 DWORD offset; /* offset (from <seg>:<start>) for line number */ 1683 DWORD lineno; /* the line number (OR:ed with 1684 0x80000000 why ???) */ 1685 } l[1]; /* actually array of <nlines> */ 1686}; 1687 1688static ULong codeview_dump_linetab2( 1689 DebugInfo* di, 1690 Addr bias, 1691 IMAGE_SECTION_HEADER* sectp, 1692 HChar* linetab, 1693 DWORD size, 1694 HChar* strimage, 1695 DWORD strsize, 1696 const HChar* pfx 1697 ) 1698{ 1699 DWORD offset; 1700 unsigned i; 1701 struct codeview_linetab2_block* lbh; 1702 struct codeview_linetab2_file* fd; 1703 1704 Bool debug = di->trace_symtab; 1705 ULong n_line2s_read = 0; 1706 1707 if (*(const DWORD*)linetab != 0x000000f4) 1708 return 0; 1709 offset = *((DWORD*)linetab + 1); 1710 lbh = (struct codeview_linetab2_block*)(linetab + 8 + offset); 1711 1712 while ((HChar*)lbh < linetab + size) { 1713 1714 HChar *filename, *dirname; 1715 Addr svma_s, svma_e; 1716 if (lbh->header != 0x000000f2) { 1717 /* FIXME: should also check that whole lbh fits in linetab + size */ 1718 if (debug) 1719 VG_(printf)("%sblock end %x\n", pfx, lbh->header); 1720 break; 1721 } 1722 if (debug) 1723 VG_(printf)("%sblock from %04x:%08x-%08x (size %u) (%u lines)\n", 1724 pfx, lbh->seg, lbh->start, lbh->start + lbh->size - 1, 1725 lbh->size, lbh->nlines); 1726 fd = (struct codeview_linetab2_file*)(linetab + 8 + lbh->file_offset); 1727 if (debug) 1728 VG_(printf)( 1729 "%s md5=%02x%02x%02x%02x%02x%02x%02x%02x" 1730 "%02x%02x%02x%02x%02x%02x%02x%02x\n", 1731 pfx, fd->md5[ 0], fd->md5[ 1], fd->md5[ 2], fd->md5[ 3], 1732 fd->md5[ 4], fd->md5[ 5], fd->md5[ 6], fd->md5[ 7], 1733 fd->md5[ 8], fd->md5[ 9], fd->md5[10], fd->md5[11], 1734 fd->md5[12], fd->md5[13], fd->md5[14], fd->md5[15] ); 1735 /* FIXME: should check that string is within strimage + strsize */ 1736 if (strimage) { 1737 dirname = strimage + fd->offset; 1738 filename = VG_(strrchr)(dirname, '\\'); 1739 if (filename == NULL) { 1740 filename = ML_(addStr)(di, dirname, -1); 1741 dirname = NULL; 1742 } else { 1743 dirname = ML_(addStr)(di, dirname, VG_(strlen)(dirname) 1744 - VG_(strlen)(filename)); 1745 filename = ML_(addStr)(di, filename+1, -1); 1746 } 1747 } else { 1748 filename = ML_(addStr)(di, "???", -1); 1749 dirname = NULL; 1750 } 1751 1752 if (debug) 1753 VG_(printf)("%s file=%s\n", pfx, filename); 1754 1755 for (i = 0; i < lbh->nlines; i++) { 1756 if (debug) 1757 VG_(printf)("%s offset=%08x line=%d\n", 1758 pfx, lbh->l[i].offset, lbh->l[i].lineno ^ 0x80000000); 1759 } 1760 1761 if (lbh->nlines > 1) { 1762 for (i = 0; i < lbh->nlines-1; i++) { 1763 svma_s = sectp[lbh->seg - 1].VirtualAddress + lbh->start 1764 + lbh->l[i].offset; 1765 svma_e = sectp[lbh->seg - 1].VirtualAddress + lbh->start 1766 + lbh->l[i+1].offset-1; 1767 if (debug) 1768 VG_(printf)("%s line %d: %08lx to %08lx\n", 1769 pfx, lbh->l[i].lineno ^ 0x80000000, svma_s, svma_e); 1770 ML_(addLineInfo)( di, filename, dirname, 1771 bias + svma_s, 1772 bias + svma_e + 1, 1773 lbh->l[i].lineno ^ 0x80000000, 0 ); 1774 n_line2s_read++; 1775 } 1776 svma_s = sectp[lbh->seg - 1].VirtualAddress + lbh->start 1777 + lbh->l[ lbh->nlines-1].offset; 1778 svma_e = sectp[lbh->seg - 1].VirtualAddress + lbh->start 1779 + lbh->size - 1; 1780 if (debug) 1781 VG_(printf)("%s line %d: %08lx to %08lx\n", 1782 pfx, lbh->l[ lbh->nlines-1 ].lineno ^ 0x80000000, 1783 svma_s, svma_e); 1784 ML_(addLineInfo)( di, filename, dirname, 1785 bias + svma_s, 1786 bias + svma_e + 1, 1787 lbh->l[lbh->nlines-1].lineno ^ 0x80000000, 0 ); 1788 n_line2s_read++; 1789 } 1790 1791 lbh = (struct codeview_linetab2_block*) 1792 ((char*)lbh + 8 + lbh->size_of_block); 1793 } 1794 return n_line2s_read; 1795} 1796 1797 1798/*------------------------------------------------------------*/ 1799/*--- ---*/ 1800/*--- Main stuff: pdb_dump ---*/ 1801/*--- ---*/ 1802/*------------------------------------------------------------*/ 1803 1804static Int cmp_FPO_DATA_for_canonicalisation ( const void* f1V, 1805 const void* f2V ) 1806{ 1807 /* Cause FPO data to be sorted first in ascending order of range 1808 starts, and for entries with the same range start, with the 1809 shorter range (length) first. */ 1810 const FPO_DATA* f1 = f1V; 1811 const FPO_DATA* f2 = f2V; 1812 if (f1->ulOffStart < f2->ulOffStart) return -1; 1813 if (f1->ulOffStart > f2->ulOffStart) return 1; 1814 if (f1->cbProcSize < f2->cbProcSize) return -1; 1815 if (f1->cbProcSize > f2->cbProcSize) return 1; 1816 return 0; /* identical in both start and length */ 1817} 1818 1819 1820/* JRS fixme: compare with version in current Wine sources */ 1821static void pdb_dump( struct pdb_reader* pdb, 1822 DebugInfo* di, 1823 Addr pe_avma, 1824 PtrdiffT pe_bias, 1825 IMAGE_SECTION_HEADER* sectp_avma ) 1826{ 1827 Int header_size; 1828 1829 PDB_TYPES types; 1830 PDB_SYMBOLS symbols; 1831 unsigned len_modimage; 1832 char *modimage; 1833 char *file; 1834 1835 Bool debug = di->trace_symtab; 1836 1837 ULong n_fpos_read = 0, n_syms_read = 0, 1838 n_lines_read = 0, n_line2s_read = 0; 1839 1840 // FIXME: symbols for bare indices 1,2,3,5 in .pdb file 1841 1842 char* types_image = pdb->read_file( pdb, 2, 0 ); 1843 char* symbols_image = pdb->read_file( pdb, 3, 0 ); 1844 1845 /* establish filesimage and filessize. These are only needed for 1846 reading linetab2 tables, as far as I can deduce from the Wine 1847 sources. */ 1848 char* filesimage = pdb->read_file( pdb, 12, 0); /* FIXME: really fixed ??? */ 1849 UInt filessize = 0; 1850 if (filesimage) { 1851 if (*(const DWORD*)filesimage == 0xeffeeffe) { 1852 filessize = *(const DWORD*)(filesimage + 8); 1853 } else { 1854 if (0) 1855 VG_(printf)("wrong header %x expecting 0xeffeeffe\n", 1856 *(const DWORD*)filesimage); 1857 ML_(dinfo_free)( (void*)filesimage); 1858 filesimage = NULL; 1859 } 1860 } 1861 1862 /* Since we just use the FPO data without reformatting, at least 1863 do a basic sanity check on the struct layout. */ 1864 vg_assert(sizeof(FPO_DATA) == 16); 1865 if (di->text_present) { 1866 /* only load FPO if there's text present (otherwise it's 1867 meaningless?) */ 1868 unsigned sz = 0; 1869 di->fpo = pdb->read_file( pdb, 5, &sz ); 1870 1871 // FIXME: seems like the size can be a non-integral number 1872 // of FPO_DATAs. Force-align it (moronically). Perhaps this 1873 // signifies that we're not looking at a valid FPO table .. 1874 // who knows. Needs investigation. 1875 while (sz > 0 && (sz % sizeof(FPO_DATA)) != 0) 1876 sz--; 1877 1878 di->fpo_size = sz; 1879 if (0) VG_(printf)("FPO: got fpo_size %lu\n", (UWord)sz); 1880 vg_assert(0 == (di->fpo_size % sizeof(FPO_DATA))); 1881 di->fpo_base_avma = pe_avma; 1882 } else { 1883 vg_assert(di->fpo == NULL); 1884 vg_assert(di->fpo_size == 0); 1885 } 1886 1887 // BEGIN clean up FPO data 1888 if (di->fpo && di->fpo_size > 0) { 1889 Word i, j; 1890 Bool anyChanges; 1891 Int itersAvail = 10; 1892 1893 vg_assert(sizeof(di->fpo[0]) == 16); 1894 di->fpo_size /= sizeof(di->fpo[0]); 1895 1896 // BEGIN FPO-data tidying-up loop 1897 do { 1898 1899 vg_assert(itersAvail >= 0); /* safety check -- don't loop forever */ 1900 itersAvail--; 1901 1902 anyChanges = False; 1903 1904 /* First get them in ascending order of start point */ 1905 VG_(ssort)( di->fpo, (SizeT)di->fpo_size, (SizeT)sizeof(FPO_DATA), 1906 cmp_FPO_DATA_for_canonicalisation ); 1907 /* Get rid of any zero length entries */ 1908 j = 0; 1909 for (i = 0; i < di->fpo_size; i++) { 1910 if (di->fpo[i].cbProcSize == 0) { 1911 anyChanges = True; 1912 continue; 1913 } 1914 di->fpo[j++] = di->fpo[i]; 1915 } 1916 vg_assert(j >= 0 && j <= di->fpo_size); 1917 di->fpo_size = j; 1918 1919 /* Get rid of any dups */ 1920 if (di->fpo_size > 1) { 1921 j = 1; 1922 for (i = 1; i < di->fpo_size; i++) { 1923 Bool dup 1924 = di->fpo[j-1].ulOffStart == di->fpo[i].ulOffStart 1925 && di->fpo[j-1].cbProcSize == di->fpo[i].cbProcSize; 1926 if (dup) { 1927 anyChanges = True; 1928 continue; 1929 } 1930 di->fpo[j++] = di->fpo[i]; 1931 } 1932 vg_assert(j >= 0 && j <= di->fpo_size); 1933 di->fpo_size = j; 1934 } 1935 1936 /* Truncate any overlapping ranges */ 1937 for (i = 1; i < di->fpo_size; i++) { 1938 vg_assert(di->fpo[i-1].ulOffStart <= di->fpo[i].ulOffStart); 1939 if (di->fpo[i-1].ulOffStart + di->fpo[i-1].cbProcSize 1940 > di->fpo[i].ulOffStart) { 1941 anyChanges = True; 1942 di->fpo[i-1].cbProcSize 1943 = di->fpo[i].ulOffStart - di->fpo[i-1].ulOffStart; 1944 } 1945 } 1946 1947 } while (anyChanges); 1948 // END FPO-data tidying-up loop 1949 1950 /* Should now be in ascending order, non overlapping, no zero ranges. 1951 Check this, get the min and max avmas, and bias the entries. */ 1952 for (i = 0; i < di->fpo_size; i++) { 1953 vg_assert(di->fpo[i].cbProcSize > 0); 1954 1955 if (i > 0) { 1956 vg_assert(di->fpo[i-1].ulOffStart < di->fpo[i].ulOffStart); 1957 vg_assert(di->fpo[i-1].ulOffStart + di->fpo[i-1].cbProcSize 1958 <= di->fpo[i].ulOffStart); 1959 } 1960 } 1961 1962 /* Now bias the table. This can't be done in the same pass as 1963 the sanity check, hence a second loop. */ 1964 for (i = 0; i < di->fpo_size; i++) { 1965 di->fpo[i].ulOffStart += pe_avma; 1966 // make sure the biasing didn't royally screw up, by wrapping 1967 // the range around the end of the address space 1968 vg_assert(0xFFFFFFFF - di->fpo[i].ulOffStart /* "remaining space" */ 1969 >= di->fpo[i].cbProcSize); 1970 } 1971 1972 /* Dump any entries which point outside the text segment and 1973 compute the min/max avma "hint" addresses. */ 1974 Addr min_avma = ~(Addr)0; 1975 Addr max_avma = (Addr)0; 1976 vg_assert(di->text_present); 1977 j = 0; 1978 for (i = 0; i < di->fpo_size; i++) { 1979 if ((Addr)(di->fpo[i].ulOffStart) >= di->text_avma 1980 && (Addr)(di->fpo[i].ulOffStart + di->fpo[i].cbProcSize) 1981 <= di->text_avma + di->text_size) { 1982 /* Update min/max limits as we go along. */ 1983 if (di->fpo[i].ulOffStart < min_avma) 1984 min_avma = di->fpo[i].ulOffStart; 1985 if (di->fpo[i].ulOffStart + di->fpo[i].cbProcSize - 1 > max_avma) 1986 max_avma = di->fpo[i].ulOffStart + di->fpo[i].cbProcSize - 1; 1987 /* Keep */ 1988 di->fpo[j++] = di->fpo[i]; 1989 if (0) 1990 VG_(printf)("FPO: keep text=[0x%lx,0x%lx) 0x%lx 0x%lx\n", 1991 di->text_avma, di->text_avma + di->text_size, 1992 (Addr)di->fpo[i].ulOffStart, 1993 (Addr)di->fpo[i].ulOffStart 1994 + (Addr)di->fpo[i].cbProcSize - 1); 1995 } else { 1996 if (0) 1997 VG_(printf)("FPO: SKIP text=[0x%lx,0x%lx) 0x%lx 0x%lx\n", 1998 di->text_avma, di->text_avma + di->text_size, 1999 (Addr)di->fpo[i].ulOffStart, 2000 (Addr)di->fpo[i].ulOffStart 2001 + (Addr)di->fpo[i].cbProcSize - 1); 2002 /* out of range; ignore */ 2003 } 2004 } 2005 vg_assert(j >= 0 && j <= di->fpo_size); 2006 di->fpo_size = j; 2007 2008 /* And record min/max */ 2009 /* biasing shouldn't cause wraparound (?!) */ 2010 if (di->fpo_size > 0) { 2011 vg_assert(min_avma <= max_avma); /* should always hold */ 2012 di->fpo_minavma = min_avma; 2013 di->fpo_maxavma = max_avma; 2014 } else { 2015 di->fpo_minavma = 0; 2016 di->fpo_maxavma = 0; 2017 } 2018 2019 if (0) { 2020 VG_(printf)("FPO: min/max avma %#lx %#lx\n", 2021 di->fpo_minavma, di->fpo_maxavma); 2022 } 2023 2024 n_fpos_read += (ULong)di->fpo_size; 2025 } 2026 // END clean up FPO data 2027 2028 pdb_convert_types_header( &types, types_image ); 2029 switch ( types.version ) { 2030 case 19950410: /* VC 4.0 */ 2031 case 19951122: 2032 case 19961031: /* VC 5.0 / 6.0 */ 2033 case 20040203: /* VC 7.0 FIXME?? */ 2034 break; 2035 default: 2036 if (VG_(clo_verbosity) > 1) 2037 VG_(message)(Vg_UserMsg, 2038 "Unknown .pdb type info version %ld\n", 2039 types.version ); 2040 } 2041 2042 header_size = 0; 2043 pdb_convert_symbols_header( &symbols, &header_size, symbols_image ); 2044 switch ( symbols.version ) { 2045 case 0: /* VC 4.0 */ 2046 case 19960307: /* VC 5.0 */ 2047 case 19970606: /* VC 6.0 */ 2048 case 19990903: /* VC 7.0 FIXME?? */ 2049 break; 2050 default: 2051 if (VG_(clo_verbosity) > 1) 2052 VG_(message)(Vg_UserMsg, 2053 "Unknown .pdb symbol info version %ld\n", 2054 symbols.version ); 2055 } 2056 2057 /* 2058 * Read global symbol table 2059 */ 2060 modimage = pdb->read_file( pdb, symbols.gsym_file, &len_modimage ); 2061 if (modimage) { 2062 if (debug) 2063 VG_(umsg)("\n"); 2064 if (VG_(clo_verbosity) > 1) 2065 VG_(message)(Vg_UserMsg, "Reading global symbols\n" ); 2066 DEBUG_SnarfCodeView( di, pe_avma, sectp_avma, modimage, 0, len_modimage ); 2067 ML_(dinfo_free)( (void*)modimage ); 2068 } 2069 2070 /* 2071 * Read per-module symbol / linenumber tables 2072 */ 2073 file = symbols_image + header_size; 2074 while ( file - symbols_image < header_size + symbols.module_size ) { 2075 int file_nr, /* file_index, */ symbol_size, lineno_size; 2076 char *file_name; 2077 2078 if ( symbols.version < 19970000 ) { 2079 PDB_SYMBOL_FILE *sym_file = (PDB_SYMBOL_FILE *) file; 2080 file_nr = sym_file->file; 2081 file_name = sym_file->filename; 2082 /* file_index = sym_file->range.index; */ /* UNUSED */ 2083 symbol_size = sym_file->symbol_size; 2084 lineno_size = sym_file->lineno_size; 2085 } else { 2086 PDB_SYMBOL_FILE_EX *sym_file = (PDB_SYMBOL_FILE_EX *) file; 2087 file_nr = sym_file->file; 2088 file_name = sym_file->filename; 2089 /* file_index = sym_file->range.index; */ /* UNUSED */ 2090 symbol_size = sym_file->symbol_size; 2091 lineno_size = sym_file->lineno_size; 2092 } 2093 2094 modimage = pdb->read_file( pdb, file_nr, 0 ); 2095 if (modimage) { 2096 Int total_size; 2097 if (0) VG_(printf)("lineno_size %d symbol_size %d\n", 2098 lineno_size, symbol_size ); 2099 2100 total_size = pdb_get_file_size(pdb, file_nr); 2101 2102 if (symbol_size) { 2103 if (debug) 2104 VG_(umsg)("\n"); 2105 if (VG_(clo_verbosity) > 1) 2106 VG_(message)(Vg_UserMsg, "Reading symbols for %s\n", 2107 file_name ); 2108 n_syms_read 2109 += DEBUG_SnarfCodeView( di, pe_avma, sectp_avma, modimage, 2110 sizeof(unsigned long), 2111 symbol_size ); 2112 } 2113 2114 if (lineno_size) { 2115 if (debug) 2116 VG_(umsg)("\n"); 2117 if (VG_(clo_verbosity) > 1) 2118 VG_(message)(Vg_UserMsg, "Reading lines for %s\n", file_name ); 2119 n_lines_read 2120 += DEBUG_SnarfLinetab( di, pe_avma, sectp_avma, 2121 modimage + symbol_size, lineno_size ); 2122 } 2123 2124 /* anyway, lineno_size doesn't see to really be the size of 2125 * the line number information, and it's not clear yet when 2126 * to call for linetab2... 2127 */ 2128 n_line2s_read 2129 += codeview_dump_linetab2( 2130 di, pe_avma, sectp_avma, 2131 (HChar*)modimage + symbol_size + lineno_size, 2132 total_size - (symbol_size + lineno_size), 2133 /* if filesimage is NULL, pass that directly onwards 2134 to codeview_dump_linetab2, so it knows not to 2135 poke around in there. */ 2136 filesimage ? filesimage + 12 : NULL, 2137 filessize, " " 2138 ); 2139 2140 ML_(dinfo_free)( (void*)modimage ); 2141 } 2142 2143 file_name += VG_(strlen)(file_name) + 1; 2144 file = (char *)( 2145 (unsigned long)(file_name 2146 + VG_(strlen)(file_name) + 1 + 3) & ~3 ); 2147 } 2148 2149 /* 2150 * Cleanup 2151 */ 2152 if ( symbols_image ) ML_(dinfo_free)( symbols_image ); 2153 if ( types_image ) ML_(dinfo_free)( types_image ); 2154 if ( pdb->u.jg.toc ) ML_(dinfo_free)( pdb->u.jg.toc ); 2155 2156 if (VG_(clo_verbosity) > 1) { 2157 VG_(message)(Vg_DebugMsg, 2158 " # symbols read = %llu\n", n_syms_read ); 2159 VG_(message)(Vg_DebugMsg, 2160 " # lines read = %llu\n", n_lines_read ); 2161 VG_(message)(Vg_DebugMsg, 2162 " # line2s read = %llu\n", n_line2s_read ); 2163 VG_(message)(Vg_DebugMsg, 2164 " # fpos read = %llu\n", n_fpos_read ); 2165 } 2166} 2167 2168 2169/*------------------------------------------------------------*/ 2170/*--- ---*/ 2171/*--- TOP LEVEL for PDB reading ---*/ 2172/*--- ---*/ 2173/*------------------------------------------------------------*/ 2174 2175/* Read line, symbol and unwind information from a PDB file. 2176*/ 2177Bool ML_(read_pdb_debug_info)( 2178 DebugInfo* di, 2179 Addr obj_avma, 2180 PtrdiffT obj_bias, 2181 void* pdbimage, 2182 SizeT n_pdbimage, 2183 HChar* pdbname, 2184 ULong pdbmtime 2185 ) 2186{ 2187 Char* pe_seg_avma; 2188 Int i; 2189 Addr mapped_avma, mapped_end_avma; 2190 unsigned signature; 2191 void* hdr; 2192 struct pdb_reader reader; 2193 IMAGE_DOS_HEADER* dos_avma; 2194 IMAGE_NT_HEADERS* ntheaders_avma; 2195 IMAGE_SECTION_HEADER* sectp_avma; 2196 IMAGE_SECTION_HEADER* pe_sechdr_avma; 2197 2198 if (VG_(clo_verbosity) > 1) 2199 VG_(message)(Vg_UserMsg, "Processing PDB file %s\n", pdbname ); 2200 2201 dos_avma = (IMAGE_DOS_HEADER *)obj_avma; 2202 if (dos_avma->e_magic != IMAGE_DOS_SIGNATURE) 2203 return False; 2204 2205 ntheaders_avma 2206 = (IMAGE_NT_HEADERS *)((Char*)dos_avma + dos_avma->e_lfanew); 2207 if (ntheaders_avma->Signature != IMAGE_NT_SIGNATURE) 2208 return False; 2209 2210 sectp_avma 2211 = (IMAGE_SECTION_HEADER *)( 2212 (Char*)ntheaders_avma 2213 + OFFSET_OF(IMAGE_NT_HEADERS, OptionalHeader) 2214 + ntheaders_avma->FileHeader.SizeOfOptionalHeader 2215 ); 2216 2217 /* JRS: this seems like something of a hack. */ 2218 di->soname = ML_(dinfo_strdup)("di.readpdb.rpdi.1", pdbname); 2219 2220 /* someone (ie WINE) is loading a Windows PE format object. we 2221 need to use its details to determine which area of memory is 2222 executable... */ 2223 pe_seg_avma 2224 = (Char*)ntheaders_avma 2225 + OFFSET_OF(IMAGE_NT_HEADERS, OptionalHeader) 2226 + ntheaders_avma->FileHeader.SizeOfOptionalHeader; 2227 2228 /* Iterate over PE headers and fill our section mapping table. */ 2229 for ( i = 0; 2230 i < ntheaders_avma->FileHeader.NumberOfSections; 2231 i++, pe_seg_avma += sizeof(IMAGE_SECTION_HEADER) ) { 2232 pe_sechdr_avma = (IMAGE_SECTION_HEADER *)pe_seg_avma; 2233 2234 if (VG_(clo_verbosity) > 1) { 2235 /* Copy name, it can be 8 chars and not NUL-terminated */ 2236 char name[9]; 2237 VG_(memcpy)(name, pe_sechdr_avma->Name, 8); 2238 name[8] = '\0'; 2239 VG_(message)(Vg_UserMsg, 2240 " Scanning PE section %ps at avma %#lx svma %#lx\n", 2241 name, obj_avma + pe_sechdr_avma->VirtualAddress, 2242 pe_sechdr_avma->VirtualAddress); 2243 } 2244 2245 if (pe_sechdr_avma->Characteristics & IMAGE_SCN_MEM_DISCARDABLE) 2246 continue; 2247 2248 mapped_avma = (Addr)obj_avma + pe_sechdr_avma->VirtualAddress; 2249 mapped_end_avma = mapped_avma + pe_sechdr_avma->Misc.VirtualSize; 2250 2251 struct _DebugInfoMapping map; 2252 map.avma = mapped_avma; 2253 map.size = pe_sechdr_avma->Misc.VirtualSize; 2254 map.foff = pe_sechdr_avma->PointerToRawData; 2255 map.ro = False; 2256 2257 if (pe_sechdr_avma->Characteristics & IMAGE_SCN_CNT_CODE) { 2258 /* Ignore uninitialised code sections - if you have 2259 incremental linking enabled in Visual Studio then you will 2260 get a uninitialised code section called .textbss before 2261 the real text section and valgrind will compute the wrong 2262 avma value and hence the wrong bias. */ 2263 if (!(pe_sechdr_avma->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)) { 2264 map.rx = True; 2265 map.rw = False; 2266 VG_(addToXA)(di->fsm.maps, &map); 2267 di->fsm.have_rx_map = True; 2268 2269 di->text_present = True; 2270 if (di->text_avma == 0) { 2271 di->text_svma = pe_sechdr_avma->VirtualAddress; 2272 di->text_avma = mapped_avma; 2273 di->text_size = pe_sechdr_avma->Misc.VirtualSize; 2274 } else { 2275 di->text_size = mapped_end_avma - di->text_avma; 2276 } 2277 } 2278 } 2279 else if (pe_sechdr_avma->Characteristics 2280 & IMAGE_SCN_CNT_INITIALIZED_DATA) { 2281 map.rx = False; 2282 map.rw = True; 2283 VG_(addToXA)(di->fsm.maps, &map); 2284 di->fsm.have_rw_map = True; 2285 2286 di->data_present = True; 2287 if (di->data_avma == 0) { 2288 di->data_avma = mapped_avma; 2289 di->data_size = pe_sechdr_avma->Misc.VirtualSize; 2290 } else { 2291 di->data_size = mapped_end_avma - di->data_avma; 2292 } 2293 } 2294 else if (pe_sechdr_avma->Characteristics 2295 & IMAGE_SCN_CNT_UNINITIALIZED_DATA) { 2296 di->bss_present = True; 2297 if (di->bss_avma == 0) { 2298 di->bss_avma = mapped_avma; 2299 di->bss_size = pe_sechdr_avma->Misc.VirtualSize; 2300 } else { 2301 di->bss_size = mapped_end_avma - di->bss_avma; 2302 } 2303 } 2304 } 2305 2306 if (di->fsm.have_rx_map && di->fsm.have_rw_map && !di->have_dinfo) { 2307 vg_assert(di->fsm.filename); 2308 TRACE_SYMTAB("\n"); 2309 TRACE_SYMTAB("------ start PE OBJECT with PDB INFO " 2310 "---------------------\n"); 2311 TRACE_SYMTAB("------ name = %s\n", di->fsm.filename); 2312 TRACE_SYMTAB("\n"); 2313 } 2314 2315 di->text_bias = obj_bias; 2316 2317 if (VG_(clo_verbosity) > 1) { 2318 for (i = 0; i < VG_(sizeXA)(di->fsm.maps); i++) { 2319 struct _DebugInfoMapping* map = VG_(indexXA)(di->fsm.maps, i); 2320 if (map->rx) 2321 VG_(message)(Vg_DebugMsg, 2322 "rx_map: avma %#lx size %7lu foff %llu\n", 2323 map->avma, map->size, (Off64T)map->foff); 2324 } 2325 for (i = 0; i < VG_(sizeXA)(di->fsm.maps); i++) { 2326 struct _DebugInfoMapping* map = VG_(indexXA)(di->fsm.maps, i); 2327 if (map->rw) 2328 VG_(message)(Vg_DebugMsg, 2329 "rw_map: avma %#lx size %7lu foff %llu\n", 2330 map->avma, map->size, (Off64T)map->foff); 2331 } 2332 2333 VG_(message)(Vg_DebugMsg, 2334 " text: avma %#lx svma %#lx size %7lu bias %#lx\n", 2335 di->text_avma, di->text_svma, 2336 di->text_size, di->text_bias); 2337 } 2338 2339 /* 2340 * Read in TOC and well-known files 2341 */ 2342 signature = 0; 2343 hdr = find_pdb_header( pdbimage, &signature ); 2344 if (0==hdr) 2345 return False; /* JRS: significance? no pdb header? */ 2346 2347 VG_(memset)(&reader, 0, sizeof(reader)); 2348 reader.u.jg.header = hdr; 2349 2350 if (0==VG_(strncmp)((char const *)&signature, "DS\0\0", 4)) { 2351 struct PDB_DS_ROOT* root; 2352 pdb_ds_init( &reader, pdbimage, n_pdbimage ); 2353 root = reader.read_file( &reader, 1, 0 ); 2354 if (root) { 2355 pdb_check_root_version_and_timestamp( 2356 pdbname, pdbmtime, root->version, root->TimeDateStamp ); 2357 ML_(dinfo_free)( root ); 2358 } 2359 pdb_dump( &reader, di, obj_avma, obj_bias, sectp_avma ); 2360 } 2361 else 2362 if (0==VG_(strncmp)((char const *)&signature, "JG\0\0", 4)) { 2363 struct PDB_JG_ROOT* root; 2364 pdb_jg_init( &reader, pdbimage, n_pdbimage ); 2365 root = reader.read_file( &reader, 1, 0 ); 2366 if (root) { 2367 pdb_check_root_version_and_timestamp( 2368 pdbname, pdbmtime, root->version, root->TimeDateStamp); 2369 ML_(dinfo_free)( root ); 2370 } 2371 pdb_dump( &reader, di, obj_avma, obj_bias, sectp_avma ); 2372 } 2373 2374 if (1) { 2375 TRACE_SYMTAB("\n------ Canonicalising the " 2376 "acquired info ------\n"); 2377 /* prepare read data for use */ 2378 ML_(canonicaliseTables)( di ); 2379 /* notify m_redir about it */ 2380 TRACE_SYMTAB("\n------ Notifying m_redir ------\n"); 2381 VG_(redir_notify_new_DebugInfo)( di ); 2382 /* Note that we succeeded */ 2383 di->have_dinfo = True; 2384 } else { 2385 TRACE_SYMTAB("\n------ PE with PDB reading failed ------\n"); 2386 /* Something went wrong (eg. bad ELF file). Should we delete 2387 this DebugInfo? No - it contains info on the rw/rx 2388 mappings, at least. */ 2389 } 2390 2391 TRACE_SYMTAB("\n"); 2392 TRACE_SYMTAB("------ name = %s\n", di->fsm.filename); 2393 TRACE_SYMTAB("------ end PE OBJECT with PDB INFO " 2394 "--------------------\n"); 2395 TRACE_SYMTAB("\n"); 2396 2397 return True; 2398} 2399 2400 2401/* Examine a PE file to see if it states the path of an associated PDB 2402 file; if so return that. Caller must deallocate with 2403 ML_(dinfo_free). 2404*/ 2405 2406HChar* ML_(find_name_of_pdb_file)( HChar* pename ) 2407{ 2408 /* This is a giant kludge, of the kind "you did WTF?!?", but it 2409 works. */ 2410 Bool do_cleanup = False; 2411 HChar tmpname[VG_(mkstemp_fullname_bufsz)(50-1)], tmpnameroot[50]; 2412 Int fd, r; 2413 HChar* res = NULL; 2414 2415 if (!pename) 2416 goto out; 2417 2418 fd = -1; 2419 VG_(memset)(tmpnameroot, 0, sizeof(tmpnameroot)); 2420 VG_(sprintf)(tmpnameroot, "petmp%d", VG_(getpid)()); 2421 VG_(memset)(tmpname, 0, sizeof(tmpname)); 2422 fd = VG_(mkstemp)( tmpnameroot, tmpname ); 2423 if (fd == -1) { 2424 VG_(message)(Vg_UserMsg, 2425 "Find PDB file: Can't create /tmp file %s\n", tmpname); 2426 goto out; 2427 } 2428 do_cleanup = True; 2429 2430 /* Make up the command to run, essentially: 2431 sh -c "strings (pename) | egrep '\.pdb|\.PDB' > (tmpname)" 2432 */ 2433 const HChar* sh = "/bin/sh"; 2434 const HChar* strings = "/usr/bin/strings"; 2435 const HChar* egrep = "/usr/bin/egrep"; 2436 2437 /* (sh) -c "(strings) (pename) | (egrep) 'pdb' > (tmpname) */ 2438 Int cmdlen = VG_(strlen)(strings) + VG_(strlen)(pename) 2439 + VG_(strlen)(egrep) + VG_(strlen)(tmpname) 2440 + 100/*misc*/; 2441 HChar* cmd = ML_(dinfo_zalloc)("di.readpe.fnopf.cmd", cmdlen); 2442 vg_assert(cmd); 2443 VG_(sprintf)(cmd, "%s -c \"%s '%s' | %s '\\.pdb|\\.PDB' >> %s\"", 2444 sh, strings, pename, egrep, tmpname); 2445 vg_assert(cmd[cmdlen-1] == 0); 2446 if (0) VG_(printf)("QQQQQQQQ: %s\n", cmd); 2447 2448 r = VG_(system)( cmd ); 2449 if (r) { 2450 VG_(message)(Vg_DebugMsg, 2451 "Find PDB file: Command failed:\n %s\n", cmd); 2452 goto out; 2453 } 2454 2455 /* Find out how big the file is, and get it aboard. */ 2456 struct vg_stat stat_buf; 2457 VG_(memset)(&stat_buf, 0, sizeof(stat_buf)); 2458 2459 SysRes sr = VG_(stat)(tmpname, &stat_buf); 2460 if (sr_isError(sr)) { 2461 VG_(umsg)("Find PDB file: can't stat %s\n", tmpname); 2462 goto out; 2463 } 2464 2465 Int szB = (Int)stat_buf.size; 2466 if (szB == 0) { 2467 VG_(umsg)("Find PDB file: %s is empty\n", tmpname); 2468 goto out; 2469 } 2470 /* 6 == strlen("X.pdb\n") */ 2471 if (szB < 6 || szB > 1024/*let's say*/) { 2472 VG_(umsg)("Find PDB file: %s has implausible size %d\n", 2473 tmpname, szB); 2474 goto out; 2475 } 2476 2477 HChar* pdbname = ML_(dinfo_zalloc)("di.readpe.fnopf.pdbname", szB + 1); 2478 vg_assert(pdbname); 2479 pdbname[szB] = 0; 2480 2481 Int nread = VG_(read)(fd, pdbname, szB); 2482 if (nread != szB) { 2483 VG_(umsg)("Find PDB file: read of %s failed\n", tmpname); 2484 goto out; 2485 } 2486 vg_assert(pdbname[szB] == 0); 2487 2488 /* Check we've got something remotely sane -- must have one dot and 2489 one \n in it, and the \n must be at the end */ 2490 Bool saw_dot = False; 2491 Int saw_n_crs = 0; 2492 Int i; 2493 for (i = 0; pdbname[i]; i++) { 2494 if (pdbname[i] == '.') saw_dot = True; 2495 if (pdbname[i] == '\n') saw_n_crs++; 2496 } 2497 if (!saw_dot || saw_n_crs != 1 || pdbname[szB-1] != '\n') { 2498 VG_(umsg)("Find PDB file: can't make sense of: %s\n", pdbname); 2499 goto out; 2500 } 2501 /* Change the \n to a terminating zero, so we have a "normal" string */ 2502 pdbname[szB-1] = 0; 2503 2504 if (0) VG_(printf)("QQQQQQQQ: got %s\n", pdbname); 2505 2506 res = pdbname; 2507 goto out; 2508 2509 out: 2510 if (do_cleanup) { 2511 VG_(close)(fd); 2512 VG_(unlink)( tmpname ); 2513 } 2514 return res; 2515} 2516 2517#endif // defined(VGO_linux) || defined(VGO_darwin) 2518 2519/*--------------------------------------------------------------------*/ 2520/*--- end ---*/ 2521/*--------------------------------------------------------------------*/ 2522