13fa2d384SViktor Prutyanov /* 23fa2d384SViktor Prutyanov * Copyright (c) 2018 Virtuozzo International GmbH 33fa2d384SViktor Prutyanov * 43fa2d384SViktor Prutyanov * Based on source of Wine project 53fa2d384SViktor Prutyanov * 63fa2d384SViktor Prutyanov * This library is free software; you can redistribute it and/or 73fa2d384SViktor Prutyanov * modify it under the terms of the GNU Lesser General Public 83fa2d384SViktor Prutyanov * License as published by the Free Software Foundation; either 93fa2d384SViktor Prutyanov * version 2.1 of the License, or (at your option) any later version. 103fa2d384SViktor Prutyanov * 113fa2d384SViktor Prutyanov * This library is distributed in the hope that it will be useful, 123fa2d384SViktor Prutyanov * but WITHOUT ANY WARRANTY; without even the implied warranty of 133fa2d384SViktor Prutyanov * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 143fa2d384SViktor Prutyanov * Lesser General Public License for more details. 153fa2d384SViktor Prutyanov * 163fa2d384SViktor Prutyanov * You should have received a copy of the GNU Lesser General Public 173fa2d384SViktor Prutyanov * License along with this library; if not, write to the Free Software 183fa2d384SViktor Prutyanov * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA 193fa2d384SViktor Prutyanov */ 203fa2d384SViktor Prutyanov 213fa2d384SViktor Prutyanov #include "qemu/osdep.h" 22bbfff196SMarkus Armbruster 233fa2d384SViktor Prutyanov #include "pdb.h" 243fa2d384SViktor Prutyanov #include "err.h" 253fa2d384SViktor Prutyanov 263fa2d384SViktor Prutyanov static uint32_t pdb_get_file_size(const struct pdb_reader *r, unsigned idx) 273fa2d384SViktor Prutyanov { 289d9c06b1SViktor Prutyanov if (idx >= r->ds.toc->num_files) { 299d9c06b1SViktor Prutyanov return 0; 309d9c06b1SViktor Prutyanov } 319d9c06b1SViktor Prutyanov 323fa2d384SViktor Prutyanov return r->ds.toc->file_size[idx]; 333fa2d384SViktor Prutyanov } 343fa2d384SViktor Prutyanov 353fa2d384SViktor Prutyanov static pdb_seg *get_seg_by_num(struct pdb_reader *r, size_t n) 363fa2d384SViktor Prutyanov { 373fa2d384SViktor Prutyanov size_t i = 0; 383fa2d384SViktor Prutyanov char *ptr; 393fa2d384SViktor Prutyanov 403fa2d384SViktor Prutyanov for (ptr = r->segs; (ptr < r->segs + r->segs_size); ) { 413fa2d384SViktor Prutyanov i++; 423fa2d384SViktor Prutyanov ptr += 8; 433fa2d384SViktor Prutyanov if (i == n) { 443fa2d384SViktor Prutyanov break; 453fa2d384SViktor Prutyanov } 463fa2d384SViktor Prutyanov ptr += sizeof(pdb_seg); 473fa2d384SViktor Prutyanov } 483fa2d384SViktor Prutyanov 493fa2d384SViktor Prutyanov return (pdb_seg *)ptr; 503fa2d384SViktor Prutyanov } 513fa2d384SViktor Prutyanov 523fa2d384SViktor Prutyanov uint64_t pdb_find_public_v3_symbol(struct pdb_reader *r, const char *name) 533fa2d384SViktor Prutyanov { 543fa2d384SViktor Prutyanov size_t size = pdb_get_file_size(r, r->symbols->gsym_file); 553fa2d384SViktor Prutyanov int length; 563fa2d384SViktor Prutyanov const union codeview_symbol *sym; 573fa2d384SViktor Prutyanov const uint8_t *root = r->modimage; 583fa2d384SViktor Prutyanov size_t i; 593fa2d384SViktor Prutyanov 603fa2d384SViktor Prutyanov for (i = 0; i < size; i += length) { 613fa2d384SViktor Prutyanov sym = (const void *)(root + i); 623fa2d384SViktor Prutyanov length = sym->generic.len + 2; 633fa2d384SViktor Prutyanov 643fa2d384SViktor Prutyanov if (!sym->generic.id || length < 4) { 653fa2d384SViktor Prutyanov break; 663fa2d384SViktor Prutyanov } 673fa2d384SViktor Prutyanov 683fa2d384SViktor Prutyanov if (sym->generic.id == S_PUB_V3 && 693fa2d384SViktor Prutyanov !strcmp(name, sym->public_v3.name)) { 703fa2d384SViktor Prutyanov pdb_seg *segment = get_seg_by_num(r, sym->public_v3.segment); 713fa2d384SViktor Prutyanov uint32_t sect_rva = segment->dword[1]; 723fa2d384SViktor Prutyanov uint64_t rva = sect_rva + sym->public_v3.offset; 733fa2d384SViktor Prutyanov 746ec6e988SViktor Prutyanov printf("%s: 0x%016x(%d:\'%.8s\') + 0x%08x = 0x%09"PRIx64"\n", name, 753fa2d384SViktor Prutyanov sect_rva, sym->public_v3.segment, 763fa2d384SViktor Prutyanov ((char *)segment - 8), sym->public_v3.offset, rva); 773fa2d384SViktor Prutyanov return rva; 783fa2d384SViktor Prutyanov } 793fa2d384SViktor Prutyanov } 803fa2d384SViktor Prutyanov 813fa2d384SViktor Prutyanov return 0; 823fa2d384SViktor Prutyanov } 833fa2d384SViktor Prutyanov 843fa2d384SViktor Prutyanov uint64_t pdb_resolve(uint64_t img_base, struct pdb_reader *r, const char *name) 853fa2d384SViktor Prutyanov { 863fa2d384SViktor Prutyanov uint64_t rva = pdb_find_public_v3_symbol(r, name); 873fa2d384SViktor Prutyanov 883fa2d384SViktor Prutyanov if (!rva) { 893fa2d384SViktor Prutyanov return 0; 903fa2d384SViktor Prutyanov } 913fa2d384SViktor Prutyanov 923fa2d384SViktor Prutyanov return img_base + rva; 933fa2d384SViktor Prutyanov } 943fa2d384SViktor Prutyanov 953fa2d384SViktor Prutyanov static void pdb_reader_ds_exit(struct pdb_reader *r) 963fa2d384SViktor Prutyanov { 972a052b4eSSuraj Shirvankar g_free(r->ds.toc); 983fa2d384SViktor Prutyanov } 993fa2d384SViktor Prutyanov 1003fa2d384SViktor Prutyanov static void pdb_exit_symbols(struct pdb_reader *r) 1013fa2d384SViktor Prutyanov { 1022a052b4eSSuraj Shirvankar g_free(r->modimage); 1032a052b4eSSuraj Shirvankar g_free(r->symbols); 1043fa2d384SViktor Prutyanov } 1053fa2d384SViktor Prutyanov 1063fa2d384SViktor Prutyanov static void pdb_exit_segments(struct pdb_reader *r) 1073fa2d384SViktor Prutyanov { 1082a052b4eSSuraj Shirvankar g_free(r->segs); 1093fa2d384SViktor Prutyanov } 1103fa2d384SViktor Prutyanov 1113fa2d384SViktor Prutyanov static void *pdb_ds_read(const PDB_DS_HEADER *header, 1123fa2d384SViktor Prutyanov const uint32_t *block_list, int size) 1133fa2d384SViktor Prutyanov { 1143fa2d384SViktor Prutyanov int i, nBlocks; 1153fa2d384SViktor Prutyanov uint8_t *buffer; 1163fa2d384SViktor Prutyanov 1173fa2d384SViktor Prutyanov if (!size) { 1183fa2d384SViktor Prutyanov return NULL; 1193fa2d384SViktor Prutyanov } 1203fa2d384SViktor Prutyanov 1213fa2d384SViktor Prutyanov nBlocks = (size + header->block_size - 1) / header->block_size; 1223fa2d384SViktor Prutyanov 1232a052b4eSSuraj Shirvankar buffer = g_malloc(nBlocks * header->block_size); 1243fa2d384SViktor Prutyanov 1253fa2d384SViktor Prutyanov for (i = 0; i < nBlocks; i++) { 1263fa2d384SViktor Prutyanov memcpy(buffer + i * header->block_size, (const char *)header + 1273fa2d384SViktor Prutyanov block_list[i] * header->block_size, header->block_size); 1283fa2d384SViktor Prutyanov } 1293fa2d384SViktor Prutyanov 1303fa2d384SViktor Prutyanov return buffer; 1313fa2d384SViktor Prutyanov } 1323fa2d384SViktor Prutyanov 1333fa2d384SViktor Prutyanov static void *pdb_ds_read_file(struct pdb_reader* r, uint32_t file_number) 1343fa2d384SViktor Prutyanov { 1353fa2d384SViktor Prutyanov const uint32_t *block_list; 1363fa2d384SViktor Prutyanov uint32_t block_size; 1373fa2d384SViktor Prutyanov const uint32_t *file_size; 1383fa2d384SViktor Prutyanov size_t i; 1393fa2d384SViktor Prutyanov 1403fa2d384SViktor Prutyanov if (!r->ds.toc || file_number >= r->ds.toc->num_files) { 1413fa2d384SViktor Prutyanov return NULL; 1423fa2d384SViktor Prutyanov } 1433fa2d384SViktor Prutyanov 1443fa2d384SViktor Prutyanov file_size = r->ds.toc->file_size; 1453fa2d384SViktor Prutyanov r->file_used[file_number / 32] |= 1 << (file_number % 32); 1463fa2d384SViktor Prutyanov 1473fa2d384SViktor Prutyanov if (file_size[file_number] == 0 || file_size[file_number] == 0xFFFFFFFF) { 1483fa2d384SViktor Prutyanov return NULL; 1493fa2d384SViktor Prutyanov } 1503fa2d384SViktor Prutyanov 1513fa2d384SViktor Prutyanov block_list = file_size + r->ds.toc->num_files; 1523fa2d384SViktor Prutyanov block_size = r->ds.header->block_size; 1533fa2d384SViktor Prutyanov 1543fa2d384SViktor Prutyanov for (i = 0; i < file_number; i++) { 1553fa2d384SViktor Prutyanov block_list += (file_size[i] + block_size - 1) / block_size; 1563fa2d384SViktor Prutyanov } 1573fa2d384SViktor Prutyanov 1583fa2d384SViktor Prutyanov return pdb_ds_read(r->ds.header, block_list, file_size[file_number]); 1593fa2d384SViktor Prutyanov } 1603fa2d384SViktor Prutyanov 1613fa2d384SViktor Prutyanov static int pdb_init_segments(struct pdb_reader *r) 1623fa2d384SViktor Prutyanov { 163231f6a7dSViktor Prutyanov unsigned stream_idx = r->segments; 1643fa2d384SViktor Prutyanov 1659d9c06b1SViktor Prutyanov r->segs = pdb_ds_read_file(r, stream_idx); 1669d9c06b1SViktor Prutyanov if (!r->segs) { 1673fa2d384SViktor Prutyanov return 1; 1683fa2d384SViktor Prutyanov } 1693fa2d384SViktor Prutyanov 1703fa2d384SViktor Prutyanov r->segs_size = pdb_get_file_size(r, stream_idx); 1719d9c06b1SViktor Prutyanov if (!r->segs_size) { 1729d9c06b1SViktor Prutyanov return 1; 1739d9c06b1SViktor Prutyanov } 1743fa2d384SViktor Prutyanov 1753fa2d384SViktor Prutyanov return 0; 1763fa2d384SViktor Prutyanov } 1773fa2d384SViktor Prutyanov 1783fa2d384SViktor Prutyanov static int pdb_init_symbols(struct pdb_reader *r) 1793fa2d384SViktor Prutyanov { 1803fa2d384SViktor Prutyanov int err = 0; 1813fa2d384SViktor Prutyanov PDB_SYMBOLS *symbols; 1823fa2d384SViktor Prutyanov 1833fa2d384SViktor Prutyanov symbols = pdb_ds_read_file(r, 3); 1843fa2d384SViktor Prutyanov if (!symbols) { 1853fa2d384SViktor Prutyanov return 1; 1863fa2d384SViktor Prutyanov } 1873fa2d384SViktor Prutyanov 1883fa2d384SViktor Prutyanov r->symbols = symbols; 1893fa2d384SViktor Prutyanov 190231f6a7dSViktor Prutyanov r->segments = *(uint16_t *)((const char *)symbols + sizeof(PDB_SYMBOLS) + 1913fa2d384SViktor Prutyanov symbols->module_size + symbols->offset_size + 1923fa2d384SViktor Prutyanov symbols->hash_size + symbols->srcmodule_size + 193231f6a7dSViktor Prutyanov symbols->pdbimport_size + symbols->unknown2_size + 194231f6a7dSViktor Prutyanov offsetof(PDB_STREAM_INDEXES, segments)); 1953fa2d384SViktor Prutyanov 1963fa2d384SViktor Prutyanov /* Read global symbol table */ 1973fa2d384SViktor Prutyanov r->modimage = pdb_ds_read_file(r, symbols->gsym_file); 1983fa2d384SViktor Prutyanov if (!r->modimage) { 1993fa2d384SViktor Prutyanov err = 1; 2003fa2d384SViktor Prutyanov goto out_symbols; 2013fa2d384SViktor Prutyanov } 2023fa2d384SViktor Prutyanov 2033fa2d384SViktor Prutyanov return 0; 2043fa2d384SViktor Prutyanov 2053fa2d384SViktor Prutyanov out_symbols: 2062a052b4eSSuraj Shirvankar g_free(symbols); 2073fa2d384SViktor Prutyanov 2083fa2d384SViktor Prutyanov return err; 2093fa2d384SViktor Prutyanov } 2103fa2d384SViktor Prutyanov 2113fa2d384SViktor Prutyanov static int pdb_reader_ds_init(struct pdb_reader *r, PDB_DS_HEADER *hdr) 2123fa2d384SViktor Prutyanov { 213f015cbb5SPeter Maydell if (hdr->block_size == 0) { 214f015cbb5SPeter Maydell return 1; 215f015cbb5SPeter Maydell } 216f015cbb5SPeter Maydell 2173fa2d384SViktor Prutyanov memset(r->file_used, 0, sizeof(r->file_used)); 2183fa2d384SViktor Prutyanov r->ds.header = hdr; 2193fa2d384SViktor Prutyanov r->ds.toc = pdb_ds_read(hdr, (uint32_t *)((uint8_t *)hdr + 2203fa2d384SViktor Prutyanov hdr->toc_page * hdr->block_size), hdr->toc_size); 2213fa2d384SViktor Prutyanov 2223fa2d384SViktor Prutyanov if (!r->ds.toc) { 2233fa2d384SViktor Prutyanov return 1; 2243fa2d384SViktor Prutyanov } 2253fa2d384SViktor Prutyanov 2263fa2d384SViktor Prutyanov return 0; 2273fa2d384SViktor Prutyanov } 2283fa2d384SViktor Prutyanov 2293fa2d384SViktor Prutyanov static int pdb_reader_init(struct pdb_reader *r, void *data) 2303fa2d384SViktor Prutyanov { 2313fa2d384SViktor Prutyanov int err = 0; 2323fa2d384SViktor Prutyanov const char pdb7[] = "Microsoft C/C++ MSF 7.00"; 2333fa2d384SViktor Prutyanov 2343fa2d384SViktor Prutyanov if (memcmp(data, pdb7, sizeof(pdb7) - 1)) { 2353fa2d384SViktor Prutyanov return 1; 2363fa2d384SViktor Prutyanov } 2373fa2d384SViktor Prutyanov 2383fa2d384SViktor Prutyanov if (pdb_reader_ds_init(r, data)) { 2393fa2d384SViktor Prutyanov return 1; 2403fa2d384SViktor Prutyanov } 2413fa2d384SViktor Prutyanov 2423fa2d384SViktor Prutyanov r->ds.root = pdb_ds_read_file(r, 1); 2433fa2d384SViktor Prutyanov if (!r->ds.root) { 2443fa2d384SViktor Prutyanov err = 1; 2453fa2d384SViktor Prutyanov goto out_ds; 2463fa2d384SViktor Prutyanov } 2473fa2d384SViktor Prutyanov 2483fa2d384SViktor Prutyanov if (pdb_init_symbols(r)) { 2493fa2d384SViktor Prutyanov err = 1; 2503fa2d384SViktor Prutyanov goto out_root; 2513fa2d384SViktor Prutyanov } 2523fa2d384SViktor Prutyanov 2533fa2d384SViktor Prutyanov if (pdb_init_segments(r)) { 2543fa2d384SViktor Prutyanov err = 1; 2553fa2d384SViktor Prutyanov goto out_sym; 2563fa2d384SViktor Prutyanov } 2573fa2d384SViktor Prutyanov 2583fa2d384SViktor Prutyanov return 0; 2593fa2d384SViktor Prutyanov 2603fa2d384SViktor Prutyanov out_sym: 2613fa2d384SViktor Prutyanov pdb_exit_symbols(r); 2623fa2d384SViktor Prutyanov out_root: 2632a052b4eSSuraj Shirvankar g_free(r->ds.root); 2643fa2d384SViktor Prutyanov out_ds: 2653fa2d384SViktor Prutyanov pdb_reader_ds_exit(r); 2663fa2d384SViktor Prutyanov 2673fa2d384SViktor Prutyanov return err; 2683fa2d384SViktor Prutyanov } 2693fa2d384SViktor Prutyanov 2703fa2d384SViktor Prutyanov static void pdb_reader_exit(struct pdb_reader *r) 2713fa2d384SViktor Prutyanov { 2723fa2d384SViktor Prutyanov pdb_exit_segments(r); 2733fa2d384SViktor Prutyanov pdb_exit_symbols(r); 2742a052b4eSSuraj Shirvankar g_free(r->ds.root); 2753fa2d384SViktor Prutyanov pdb_reader_ds_exit(r); 2763fa2d384SViktor Prutyanov } 2773fa2d384SViktor Prutyanov 2783fa2d384SViktor Prutyanov int pdb_init_from_file(const char *name, struct pdb_reader *reader) 2793fa2d384SViktor Prutyanov { 2804ea1a21dSViktor Prutyanov GError *gerr = NULL; 2813fa2d384SViktor Prutyanov int err = 0; 2823fa2d384SViktor Prutyanov void *map; 2833fa2d384SViktor Prutyanov 2844ea1a21dSViktor Prutyanov reader->gmf = g_mapped_file_new(name, TRUE, &gerr); 2854ea1a21dSViktor Prutyanov if (gerr) { 2864ea1a21dSViktor Prutyanov eprintf("Failed to map PDB file \'%s\'\n", name); 2870c4c8671SPan Nengyuan g_error_free(gerr); 2883fa2d384SViktor Prutyanov return 1; 2893fa2d384SViktor Prutyanov } 2903fa2d384SViktor Prutyanov 2914ea1a21dSViktor Prutyanov reader->file_size = g_mapped_file_get_length(reader->gmf); 2924ea1a21dSViktor Prutyanov map = g_mapped_file_get_contents(reader->gmf); 2933fa2d384SViktor Prutyanov if (pdb_reader_init(reader, map)) { 2943fa2d384SViktor Prutyanov err = 1; 2953fa2d384SViktor Prutyanov goto out_unmap; 2963fa2d384SViktor Prutyanov } 2973fa2d384SViktor Prutyanov 2983fa2d384SViktor Prutyanov return 0; 2993fa2d384SViktor Prutyanov 3003fa2d384SViktor Prutyanov out_unmap: 3014ea1a21dSViktor Prutyanov g_mapped_file_unref(reader->gmf); 3023fa2d384SViktor Prutyanov 3033fa2d384SViktor Prutyanov return err; 3043fa2d384SViktor Prutyanov } 3053fa2d384SViktor Prutyanov 3063fa2d384SViktor Prutyanov void pdb_exit(struct pdb_reader *reader) 3073fa2d384SViktor Prutyanov { 3084ea1a21dSViktor Prutyanov g_mapped_file_unref(reader->gmf); 3093fa2d384SViktor Prutyanov pdb_reader_exit(reader); 3103fa2d384SViktor Prutyanov } 311