2 * Copyright (c) 2018 Virtuozzo International GmbH
4 * Based on source of Wine project
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 #include "qemu/osdep.h"
26 static uint32_t pdb_get_file_size(const struct pdb_reader *r, unsigned idx)
28 return r->ds.toc->file_size[idx];
31 static pdb_seg *get_seg_by_num(struct pdb_reader *r, size_t n)
36 for (ptr = r->segs; (ptr < r->segs + r->segs_size); ) {
42 ptr += sizeof(pdb_seg);
45 return (pdb_seg *)ptr;
48 uint64_t pdb_find_public_v3_symbol(struct pdb_reader *r, const char *name)
50 size_t size = pdb_get_file_size(r, r->symbols->gsym_file);
52 const union codeview_symbol *sym;
53 const uint8_t *root = r->modimage;
56 for (i = 0; i < size; i += length) {
57 sym = (const void *)(root + i);
58 length = sym->generic.len + 2;
60 if (!sym->generic.id || length < 4) {
64 if (sym->generic.id == S_PUB_V3 &&
65 !strcmp(name, sym->public_v3.name)) {
66 pdb_seg *segment = get_seg_by_num(r, sym->public_v3.segment);
67 uint32_t sect_rva = segment->dword[1];
68 uint64_t rva = sect_rva + sym->public_v3.offset;
70 printf("%s: 0x%016x(%d:\'%.8s\') + 0x%08x = 0x%09"PRIx64"\n", name,
71 sect_rva, sym->public_v3.segment,
72 ((char *)segment - 8), sym->public_v3.offset, rva);
80 uint64_t pdb_resolve(uint64_t img_base, struct pdb_reader *r, const char *name)
82 uint64_t rva = pdb_find_public_v3_symbol(r, name);
88 return img_base + rva;
91 static void pdb_reader_ds_exit(struct pdb_reader *r)
96 static void pdb_exit_symbols(struct pdb_reader *r)
102 static void pdb_exit_segments(struct pdb_reader *r)
107 static void *pdb_ds_read(const PDB_DS_HEADER *header,
108 const uint32_t *block_list, int size)
117 nBlocks = (size + header->block_size - 1) / header->block_size;
119 buffer = malloc(nBlocks * header->block_size);
124 for (i = 0; i < nBlocks; i++) {
125 memcpy(buffer + i * header->block_size, (const char *)header +
126 block_list[i] * header->block_size, header->block_size);
132 static void *pdb_ds_read_file(struct pdb_reader* r, uint32_t file_number)
134 const uint32_t *block_list;
136 const uint32_t *file_size;
139 if (!r->ds.toc || file_number >= r->ds.toc->num_files) {
143 file_size = r->ds.toc->file_size;
144 r->file_used[file_number / 32] |= 1 << (file_number % 32);
146 if (file_size[file_number] == 0 || file_size[file_number] == 0xFFFFFFFF) {
150 block_list = file_size + r->ds.toc->num_files;
151 block_size = r->ds.header->block_size;
153 for (i = 0; i < file_number; i++) {
154 block_list += (file_size[i] + block_size - 1) / block_size;
157 return pdb_ds_read(r->ds.header, block_list, file_size[file_number]);
160 static int pdb_init_segments(struct pdb_reader *r)
163 unsigned stream_idx = r->sidx.segments;
165 segs = pdb_ds_read_file(r, stream_idx);
171 r->segs_size = pdb_get_file_size(r, stream_idx);
176 static int pdb_init_symbols(struct pdb_reader *r)
179 PDB_SYMBOLS *symbols;
180 PDB_STREAM_INDEXES *sidx = &r->sidx;
182 memset(sidx, -1, sizeof(*sidx));
184 symbols = pdb_ds_read_file(r, 3);
189 r->symbols = symbols;
191 if (symbols->stream_index_size != sizeof(PDB_STREAM_INDEXES)) {
196 memcpy(sidx, (const char *)symbols + sizeof(PDB_SYMBOLS) +
197 symbols->module_size + symbols->offset_size +
198 symbols->hash_size + symbols->srcmodule_size +
199 symbols->pdbimport_size + symbols->unknown2_size, sizeof(*sidx));
201 /* Read global symbol table */
202 r->modimage = pdb_ds_read_file(r, symbols->gsym_file);
216 static int pdb_reader_ds_init(struct pdb_reader *r, PDB_DS_HEADER *hdr)
218 if (hdr->block_size == 0) {
222 memset(r->file_used, 0, sizeof(r->file_used));
224 r->ds.toc = pdb_ds_read(hdr, (uint32_t *)((uint8_t *)hdr +
225 hdr->toc_page * hdr->block_size), hdr->toc_size);
234 static int pdb_reader_init(struct pdb_reader *r, void *data)
237 const char pdb7[] = "Microsoft C/C++ MSF 7.00";
239 if (memcmp(data, pdb7, sizeof(pdb7) - 1)) {
243 if (pdb_reader_ds_init(r, data)) {
247 r->ds.root = pdb_ds_read_file(r, 1);
253 if (pdb_init_symbols(r)) {
258 if (pdb_init_segments(r)) {
270 pdb_reader_ds_exit(r);
275 static void pdb_reader_exit(struct pdb_reader *r)
277 pdb_exit_segments(r);
280 pdb_reader_ds_exit(r);
283 int pdb_init_from_file(const char *name, struct pdb_reader *reader)
289 reader->gmf = g_mapped_file_new(name, TRUE, &gerr);
291 eprintf("Failed to map PDB file \'%s\'\n", name);
296 reader->file_size = g_mapped_file_get_length(reader->gmf);
297 map = g_mapped_file_get_contents(reader->gmf);
298 if (pdb_reader_init(reader, map)) {
306 g_mapped_file_unref(reader->gmf);
311 void pdb_exit(struct pdb_reader *reader)
313 g_mapped_file_unref(reader->gmf);
314 pdb_reader_exit(reader);