Eric Pouech : winedump: Dump global hash table out of PDB symbols' stream.
Module: wine Branch: master Commit: 805ffc8adb2e0bdad9170980595d076f082b8740 URL: https://gitlab.winehq.org/wine/wine/-/commit/805ffc8adb2e0bdad9170980595d076... Author: Eric Pouech <eric.pouech(a)gmail.com> Date: Tue Sep 27 11:22:11 2022 +0200 winedump: Dump global hash table out of PDB symbols' stream. Introduce relevant structures in include/wine/msvcpdb.h. Signed-off-by: Eric Pouech <eric.pouech(a)gmail.com> --- dlls/dbghelp/msc.c | 2 +- include/wine/mscvpdb.h | 31 +++++++++++++- tools/winedump/pdb.c | 107 ++++++++++++++++++++++++++++++++++++++----------- 3 files changed, 113 insertions(+), 27 deletions(-) diff --git a/dlls/dbghelp/msc.c b/dlls/dbghelp/msc.c index ca2fe1c9302..8714e756462 100644 --- a/dlls/dbghelp/msc.c +++ b/dlls/dbghelp/msc.c @@ -3182,7 +3182,7 @@ static void pdb_convert_symbols_header(PDB_SYMBOLS* symbols, symbols->hash_size = old->hash_size; symbols->srcmodule_size = old->srcmodule_size; symbols->pdbimport_size = 0; - symbols->global_file = old->global_file; + symbols->global_hash_file= old->global_hash_file; symbols->public_file = old->public_file; symbols->gsym_file = old->gsym_file; diff --git a/include/wine/mscvpdb.h b/include/wine/mscvpdb.h index 5e30a6c2beb..96511b759b1 100644 --- a/include/wine/mscvpdb.h +++ b/include/wine/mscvpdb.h @@ -2535,7 +2535,7 @@ typedef struct _PDB_SYMBOL_IMPORT typedef struct _PDB_SYMBOLS_OLD { - unsigned short global_file; + unsigned short global_hash_file; unsigned short public_file; unsigned short gsym_file; unsigned short pad; @@ -2550,7 +2550,7 @@ typedef struct _PDB_SYMBOLS unsigned int signature; unsigned int version; unsigned int age; - unsigned short global_file; + unsigned short global_hash_file; unsigned short flags; unsigned short public_file; unsigned short bldVer; @@ -2622,6 +2622,33 @@ PDB_STRING_TABLE; * - a serialized hash table */ +/* Header for hash tables inside DBI (aka symbols) stream. + * - The global hash stream contains only the hash table. + * - The public stream contains the same layout for its hash table + * (but other information as well). + */ +typedef struct +{ + unsigned signature; + unsigned version; + unsigned size_hash_records; + unsigned unknown; +} DBI_HASH_HEADER; +/* This header is followed by: + * - DBI_HASH_RECORDS (on hdr:size_hash_records bytes) + * - a bitmap of DBI_MAX_HASH + 1 entries (on DBI_BITMAP_HASH_SIZE bytes) + * - a table (one entry per present bit in bitmap) as index into hdr:num_records + */ + +typedef struct +{ + unsigned offset; + unsigned unknown; +} DBI_HASH_RECORD; + +#define DBI_MAX_HASH 4096 +#define DBI_BITMAP_HASH_SIZE ((DBI_MAX_HASH / (8 * sizeof(unsigned)) + 1) * sizeof(unsigned)) + #include "poppack.h" /* =================================================== diff --git a/tools/winedump/pdb.c b/tools/winedump/pdb.c index 9fe358aa86a..efedda2d6d4 100644 --- a/tools/winedump/pdb.c +++ b/tools/winedump/pdb.c @@ -231,6 +231,65 @@ const char* pdb_get_string_table_entry(const PDB_STRING_TABLE* table, unsigned o return (char*)(table + 1) + ofs; } +static void dump_dbi_hash_table(const BYTE* root, unsigned size, const char* name, const char* pfx) +{ + if (size >= sizeof(DBI_HASH_HEADER)) + { + const DBI_HASH_HEADER* hdr = (const DBI_HASH_HEADER*)root; + + printf("%s%s symbols hash:\n", pfx, name); + printf("%s\tSignature: 0x%x\n", pfx, hdr->signature); + printf("%s\tVersion: 0x%x (%u)\n", pfx, hdr->version, hdr->version - 0xeffe0000); + printf("%s\tSize of hash records: %u\n", pfx, hdr->size_hash_records); + printf("%s\tUnknown: %u\n", pfx, hdr->unknown); + + if (hdr->signature != 0xFFFFFFFF || + hdr->version != 0xeffe0000 + 19990810 || + (hdr->size_hash_records % sizeof(DBI_HASH_RECORD)) != 0 || + sizeof(DBI_HASH_HEADER) + hdr->size_hash_records + DBI_BITMAP_HASH_SIZE > size || + (size - (sizeof(DBI_HASH_HEADER) + hdr->size_hash_records + DBI_BITMAP_HASH_SIZE)) % sizeof(unsigned)) + { + printf("%s\t\tIncorrect hash structure\n", pfx); + } + else + { + unsigned i; + unsigned num_hash_records = hdr->size_hash_records / sizeof(DBI_HASH_RECORD); + const DBI_HASH_RECORD* hr = (const DBI_HASH_RECORD*)(hdr + 1); + unsigned* bitmap = (unsigned*)((char*)(hdr + 1) + hdr->size_hash_records); + unsigned* buckets = (unsigned*)((char*)(hdr + 1) + hdr->size_hash_records + DBI_BITMAP_HASH_SIZE); + unsigned index, last_index = (size - (sizeof(DBI_HASH_HEADER) + hdr->size_hash_records + DBI_BITMAP_HASH_SIZE)) / sizeof(unsigned); + + /* Yes, offsets for accessiong hr[] are stored as multiple of 12; and not + * as multiple of sizeof(*hr) = 8 as one might expect. + * Perhaps, native implementation likes to keep the same offsets between + * in memory representation vs on file representations. + */ + for (index = 0, i = 0; i <= DBI_MAX_HASH; i++) + { + if (bitmap[i / 32] & (1u << (i % 32))) + { + unsigned j; + printf("%s\t[%u]\n", pfx, i); + for (j = buckets[index] / 12; j < (index + 1 < last_index ? buckets[index + 1] / 12 : num_hash_records); j++) + printf("%s\t\t[%u] offset=%08x unk=%x\n", pfx, j, hr[j].offset - 1, hr[j].unknown); + index++; + } + else + printf("%s\t[%u] <<empty>>\n", pfx, i); + } + /* shouldn't happen */ + if (sizeof(DBI_HASH_HEADER) + hdr->size_hash_records + DBI_BITMAP_HASH_SIZE + index * sizeof(unsigned) > size) + { + printf("%s-- left over %u bytes\n", pfx, + size - (unsigned)(sizeof(DBI_HASH_HEADER) + hdr->size_hash_records + DBI_BITMAP_HASH_SIZE + index * sizeof(unsigned))); + } + } + } + else + printf("%sNo header in symbols hash\n", pfx); +} + static void dump_global_symbol(struct pdb_reader* reader, unsigned file) { void* global = NULL; @@ -241,8 +300,7 @@ static void dump_global_symbol(struct pdb_reader* reader, unsigned file) size = pdb_get_file_size(reader, file); - printf("Global symbols table:\n"); - dump_data(global, size, "\t"); + dump_dbi_hash_table(global, size, "Global", ""); free(global); } @@ -290,30 +348,30 @@ static void pdb_dump_symbols(struct pdb_reader* reader, PDB_STREAM_INDEXES* sidx else sprintf(tcver, "old-%x", symbols->flags); printf("Symbols:\n" - "\tsignature: %08x\n" - "\tversion: %u\n" - "\tage: %08x\n" - "\tglobal_file: %u\n" - "\tbuilder: %s\n" - "\tpublic_file: %u\n" - "\tbldVer: %u\n" - "\tgsym_file: %u\n" - "\trbldVer: %u\n" - "\tmodule_size: %08x\n" - "\toffset_size: %08x\n" - "\thash_size: %08x\n" - "\tsrc_module_size: %08x\n" - "\tpdbimport_size: %08x\n" - "\tresvd0: %08x\n" - "\tstream_idx_size: %08x\n" - "\tunknown2_size: %08x\n" - "\tresvd3: %04x\n" - "\tmachine: %s\n" - "\tresvd4 %08x\n", + "\tsignature: %08x\n" + "\tversion: %u\n" + "\tage: %08x\n" + "\tglobal_hash_file: %u\n" + "\tbuilder: %s\n" + "\tpublic_file: %u\n" + "\tbldVer: %u\n" + "\tgsym_file: %u\n" + "\trbldVer: %u\n" + "\tmodule_size: %08x\n" + "\toffset_size: %08x\n" + "\thash_size: %08x\n" + "\tsrc_module_size: %08x\n" + "\tpdbimport_size: %08x\n" + "\tresvd0: %08x\n" + "\tstream_idx_size: %08x\n" + "\tunknown2_size: %08x\n" + "\tresvd3: %04x\n" + "\tmachine: %s\n" + "\tresvd4 %08x\n", symbols->signature, symbols->version, symbols->age, - symbols->global_file, + symbols->global_hash_file, tcver, /* from symbols->flags */ symbols->public_file, symbols->bldVer, @@ -610,8 +668,9 @@ static void pdb_dump_symbols(struct pdb_reader* reader, PDB_STREAM_INDEXES* sidx file = (char*)((DWORD_PTR)(lib_name + strlen(lib_name) + 1 + 3) & ~3); } - dump_global_symbol(reader, symbols->global_file); + dump_global_symbol(reader, symbols->global_hash_file); dump_public_symbol(reader, symbols->public_file); + free(symbols); free(filesimage); }
participants (1)
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Alexandre Julliard