uint32_t address;
};
+struct string
+{
+ struct string *next;
+ uint32_t hash;
+ uint32_t offset;
+ uint32_t source_file_offset;
+ size_t len;
+ char s[];
+};
+
+struct string_table
+{
+ struct string *strings_head;
+ struct string *strings_tail;
+ uint32_t strings_len;
+ htab_t hashmap;
+};
+
+struct mod_source_files
+{
+ uint16_t files_count;
+ struct string **files;
+};
+
+struct source_files_info
+{
+ uint16_t mod_count;
+ struct mod_source_files *mods;
+};
+
/* Add a new stream to the PDB archive, and return its BFD. */
static bfd *
add_stream (bfd *pdb, const char *name, uint16_t *stream_num)
return IMAGE_FILE_MACHINE_I386;
}
-/* Stream 4 is the debug information (DBI) stream. */
+/* Validate the DEBUG_S_FILECHKSMS entry within a module's .debug$S
+ section, and copy it to the module's symbol stream. */
static bool
-populate_dbi_stream (bfd *stream, bfd *abfd)
+copy_filechksms (uint8_t *data, uint32_t size, char *string_table,
+ struct string_table *strings, uint8_t *out,
+ struct mod_source_files *mod_source)
{
- struct pdb_dbi_stream_header h;
- struct optional_dbg_header opt;
+ uint8_t *orig_data = data;
+ uint32_t orig_size = size;
+ uint16_t num_files = 0;
+ struct string **strptr;
- bfd_putl32 (0xffffffff, &h.version_signature);
- bfd_putl32 (DBI_STREAM_VERSION_70, &h.version_header);
- bfd_putl32 (1, &h.age);
- bfd_putl16 (0xffff, &h.global_stream_index);
- bfd_putl16 (0x8e1d, &h.build_number); // MSVC 14.29
- bfd_putl16 (0xffff, &h.public_stream_index);
- bfd_putl16 (0, &h.pdb_dll_version);
- bfd_putl16 (0xffff, &h.sym_record_stream);
- bfd_putl16 (0, &h.pdb_dll_rbld);
- bfd_putl32 (0, &h.mod_info_size);
- bfd_putl32 (0, &h.section_contribution_size);
- bfd_putl32 (0, &h.section_map_size);
- bfd_putl32 (0, &h.source_info_size);
- bfd_putl32 (0, &h.type_server_map_size);
- bfd_putl32 (0, &h.mfc_type_server_index);
- bfd_putl32 (sizeof (opt), &h.optional_dbg_header_size);
- bfd_putl32 (0, &h.ec_substream_size);
- bfd_putl16 (0, &h.flags);
- bfd_putl16 (get_arch_number (abfd), &h.machine);
- bfd_putl32 (0, &h.padding);
+ bfd_putl32 (DEBUG_S_FILECHKSMS, out);
+ out += sizeof (uint32_t);
- if (bfd_bwrite (&h, sizeof (h), stream) != sizeof (h))
- return false;
+ bfd_putl32 (size, out);
+ out += sizeof (uint32_t);
- bfd_putl16 (0xffff, &opt.fpo_stream);
- bfd_putl16 (0xffff, &opt.exception_stream);
- bfd_putl16 (0xffff, &opt.fixup_stream);
- bfd_putl16 (0xffff, &opt.omap_to_src_stream);
- bfd_putl16 (0xffff, &opt.omap_from_src_stream);
- bfd_putl16 (0xffff, &opt.section_header_stream);
- bfd_putl16 (0xffff, &opt.token_map_stream);
- bfd_putl16 (0xffff, &opt.xdata_stream);
- bfd_putl16 (0xffff, &opt.pdata_stream);
- bfd_putl16 (0xffff, &opt.new_fpo_stream);
- bfd_putl16 (0xffff, &opt.orig_section_header_stream);
+ /* Calculate the number of files, and check for any overflows. */
- if (bfd_bwrite (&opt, sizeof (opt), stream) != sizeof (opt))
- return false;
+ while (size > 0)
+ {
+ struct file_checksum *fc = (struct file_checksum *) data;
+ uint8_t padding;
+ size_t len;
+
+ if (size < sizeof (struct file_checksum))
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ len = sizeof (struct file_checksum) + fc->checksum_length;
+
+ if (size < len)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ data += len;
+ size -= len;
+
+ if (len % sizeof (uint32_t))
+ padding = sizeof (uint32_t) - (len % sizeof (uint32_t));
+ else
+ padding = 0;
+
+ if (size < padding)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ num_files++;
+
+ data += padding;
+ size -= padding;
+ }
+
+ /* Add the files to mod_source, so that they'll appear in the source
+ info substream. */
+
+ strptr = NULL;
+ if (num_files > 0)
+ {
+ uint16_t new_count = num_files + mod_source->files_count;
+
+ mod_source->files = xrealloc (mod_source->files,
+ sizeof (struct string *) * new_count);
+
+ strptr = mod_source->files + mod_source->files_count;
+
+ mod_source->files_count += num_files;
+ }
+
+ /* Actually copy the data. */
+
+ data = orig_data;
+ size = orig_size;
+
+ while (size > 0)
+ {
+ struct file_checksum *fc = (struct file_checksum *) data;
+ uint32_t string_off;
+ uint8_t padding;
+ size_t len;
+ struct string *str = NULL;
+
+ string_off = bfd_getl32 (&fc->file_id);
+ len = sizeof (struct file_checksum) + fc->checksum_length;
+
+ if (len % sizeof (uint32_t))
+ padding = sizeof (uint32_t) - (len % sizeof (uint32_t));
+ else
+ padding = 0;
+
+ /* Remap the "file ID", i.e. the offset in the module's string table,
+ so it points to the right place in the main string table. */
+
+ if (string_table)
+ {
+ char *fn = string_table + string_off;
+ size_t fn_len = strlen (fn);
+ uint32_t hash = calc_hash (fn, fn_len);
+ void **slot;
+
+ slot = htab_find_slot_with_hash (strings->hashmap, fn, hash,
+ NO_INSERT);
+
+ if (slot)
+ str = (struct string *) *slot;
+ }
+
+ *strptr = str;
+ strptr++;
+
+ bfd_putl32 (str ? str->offset : 0, &fc->file_id);
+
+ memcpy (out, data, len + padding);
+
+ data += len + padding;
+ size -= len + padding;
+ out += len + padding;
+ }
return true;
}
-/* Create a PDB debugging file for the PE image file abfd with the build ID
- guid, stored at pdb_name. */
-bool
-create_pdb_file (bfd *abfd, const char *pdb_name, const unsigned char *guid)
+/* Add a string to the strings table, if it's not already there. */
+static void
+add_string (char *str, size_t len, struct string_table *strings)
{
- bfd *pdb;
- bool ret = false;
- bfd *info_stream, *dbi_stream, *names_stream;
+ uint32_t hash = calc_hash (str, len);
+ void **slot;
- pdb = bfd_openw (pdb_name, "pdb");
- if (!pdb)
+ slot = htab_find_slot_with_hash (strings->hashmap, str, hash, INSERT);
+
+ if (!*slot)
{
- einfo (_("%P: warning: cannot create PDB file: %s\n"),
- bfd_errmsg (bfd_get_error ()));
- return false;
+ struct string *s;
+
+ *slot = xmalloc (offsetof (struct string, s) + len);
+
+ s = (struct string *) *slot;
+
+ s->next = NULL;
+ s->hash = hash;
+ s->offset = strings->strings_len;
+ s->source_file_offset = 0xffffffff;
+ s->len = len;
+ memcpy (s->s, str, len);
+
+ if (strings->strings_tail)
+ strings->strings_tail->next = s;
+ else
+ strings->strings_head = s;
+
+ strings->strings_tail = s;
+
+ strings->strings_len += len + 1;
}
+}
- bfd_set_format (pdb, bfd_archive);
+/* Return the hash of an entry in the string table. */
+static hashval_t
+hash_string_table_entry (const void *p)
+{
+ const struct string *s = (const struct string *) p;
- if (!create_old_directory_stream (pdb))
+ return s->hash;
+}
+
+/* Compare an entry in the string table with a string. */
+static int
+eq_string_table_entry (const void *a, const void *b)
+{
+ const struct string *s1 = (const struct string *) a;
+ const char *s2 = (const char *) b;
+ size_t s2_len = strlen (s2);
+
+ if (s2_len != s1->len)
+ return 0;
+
+ return memcmp (s1->s, s2, s2_len) == 0;
+}
+
+/* Parse the string table within the .debug$S section. */
+static void
+parse_string_table (bfd_byte *data, size_t size,
+ struct string_table *strings)
+{
+ while (true)
{
- einfo (_("%P: warning: cannot create old directory stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ size_t len = strnlen ((char *) data, size);
+
+ add_string ((char *) data, len, strings);
+
+ data += len + 1;
+
+ if (size <= len + 1)
+ break;
+
+ size -= len + 1;
}
+}
- info_stream = add_stream (pdb, NULL, NULL);
+/* Parse the .debug$S section within an object file. */
+static bool
+handle_debugs_section (asection *s, bfd *mod, struct string_table *strings,
+ uint8_t **dataptr, uint32_t *sizeptr,
+ struct mod_source_files *mod_source)
+{
+ bfd_byte *data = NULL;
+ size_t off;
+ uint32_t c13_size = 0;
+ char *string_table = NULL;
+ uint8_t *buf, *bufptr;
- if (!info_stream)
+ if (!bfd_get_full_section_contents (mod, s, &data))
+ return false;
+
+ if (!data)
+ return false;
+
+ if (bfd_getl32 (data) != CV_SIGNATURE_C13)
{
- einfo (_("%P: warning: cannot create info stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ free (data);
+ return true;
}
- if (!create_type_stream (pdb))
+ off = sizeof (uint32_t);
+
+ /* calculate size */
+
+ while (off + sizeof (uint32_t) <= s->size)
{
- einfo (_("%P: warning: cannot create TPI stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ uint32_t type, size;
+
+ type = bfd_getl32 (data + off);
+
+ off += sizeof (uint32_t);
+
+ if (off + sizeof (uint32_t) > s->size)
+ {
+ free (data);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ size = bfd_getl32 (data + off);
+
+ off += sizeof (uint32_t);
+
+ if (off + size > s->size)
+ {
+ free (data);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ switch (type)
+ {
+ case DEBUG_S_FILECHKSMS:
+ c13_size += sizeof (uint32_t) + sizeof (uint32_t) + size;
+
+ if (c13_size % sizeof (uint32_t))
+ c13_size += sizeof (uint32_t) - (c13_size % sizeof (uint32_t));
+
+ break;
+
+ case DEBUG_S_STRINGTABLE:
+ parse_string_table (data + off, size, strings);
+
+ string_table = (char *) data + off;
+
+ break;
+ }
+
+ off += size;
+
+ if (off % sizeof (uint32_t))
+ off += sizeof (uint32_t) - (off % sizeof (uint32_t));
}
- dbi_stream = add_stream (pdb, NULL, NULL);
+ if (c13_size == 0)
+ {
+ free (data);
+ return true;
+ }
- if (!dbi_stream)
+ /* copy data */
+
+ buf = xmalloc (c13_size);
+ bufptr = buf;
+
+ off = sizeof (uint32_t);
+
+ while (off + sizeof (uint32_t) <= s->size)
{
- einfo (_("%P: warning: cannot create DBI stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ uint32_t type, size;
+
+ type = bfd_getl32 (data + off);
+ off += sizeof (uint32_t);
+
+ size = bfd_getl32 (data + off);
+ off += sizeof (uint32_t);
+
+ switch (type)
+ {
+ case DEBUG_S_FILECHKSMS:
+ if (!copy_filechksms (data + off, size, string_table,
+ strings, bufptr, mod_source))
+ {
+ free (data);
+ return false;
+ }
+
+ bufptr += sizeof (uint32_t) + sizeof (uint32_t) + size;
+
+ break;
+ }
+
+ off += size;
+
+ if (off % sizeof (uint32_t))
+ off += sizeof (uint32_t) - (off % sizeof (uint32_t));
}
- if (!create_type_stream (pdb))
+ free (data);
+
+ if (*dataptr)
{
- einfo (_("%P: warning: cannot create IPI stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ /* Append the C13 info to what's already there, if the module has
+ multiple .debug$S sections. */
+
+ *dataptr = xrealloc (*dataptr, *sizeptr + c13_size);
+ memcpy (*dataptr + *sizeptr, buf, c13_size);
+
+ free (buf);
+ }
+ else
+ {
+ *dataptr = buf;
}
- names_stream = add_stream (pdb, "/names", NULL);
+ *sizeptr += c13_size;
- if (!names_stream)
+ return true;
+}
+
+/* Populate the module stream, which consists of the transformed .debug$S
+ data for each object file. */
+static bool
+populate_module_stream (bfd *stream, bfd *mod, uint32_t *sym_byte_size,
+ struct string_table *strings,
+ uint32_t *c13_info_size,
+ struct mod_source_files *mod_source)
+{
+ uint8_t int_buf[sizeof (uint32_t)];
+ uint8_t *c13_info = NULL;
+
+ *sym_byte_size = sizeof (uint32_t);
+ *c13_info_size = 0;
+
+ /* Process .debug$S section(s). */
+
+ for (asection *s = mod->sections; s; s = s->next)
{
- einfo (_("%P: warning: cannot create /names stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ if (!strcmp (s->name, ".debug$S") && s->size >= sizeof (uint32_t))
+ {
+ if (!handle_debugs_section (s, mod, strings, &c13_info,
+ c13_info_size, mod_source))
+ {
+ free (c13_info);
+ free (mod_source->files);
+ return false;
+ }
+ }
}
- if (!populate_dbi_stream (dbi_stream, abfd))
+ /* Write the signature. */
+
+ bfd_putl32 (CV_SIGNATURE_C13, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) != sizeof (uint32_t))
{
- einfo (_("%P: warning: cannot populate DBI stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ free (c13_info);
+ return false;
}
- if (!populate_info_stream (pdb, info_stream, guid))
+ if (c13_info)
{
- einfo (_("%P: warning: cannot populate info stream "
- "in PDB file: %s\n"), bfd_errmsg (bfd_get_error ()));
- goto end;
+ if (bfd_bwrite (c13_info, *c13_info_size, stream) != *c13_info_size)
+ {
+ free (c13_info);
+ return false;
+ }
+
+ free (c13_info);
}
- ret = true;
+ /* Write the global refs size. */
-end:
- bfd_close (pdb);
+ bfd_putl32 (0, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) != sizeof (uint32_t))
+ return false;
+
+ return true;
+}
+
+/* Create the module info substream within the DBI. */
+static bool
+create_module_info_substream (bfd *abfd, bfd *pdb, void **data,
+ uint32_t *size, struct string_table *strings,
+ struct source_files_info *source)
+{
+ uint8_t *ptr;
+ unsigned int mod_num;
+
+ static const char linker_fn[] = "* Linker *";
+
+ *size = 0;
+
+ for (bfd *in = coff_data (abfd)->link_info->input_bfds; in;
+ in = in->link.next)
+ {
+ size_t len = sizeof (struct module_info);
+
+ if (!strcmp (bfd_get_filename (in), "dll stuff"))
+ {
+ len += sizeof (linker_fn); /* Object name. */
+ len++; /* Empty module name. */
+ }
+ else if (in->my_archive)
+ {
+ char *name = lrealpath (bfd_get_filename (in));
+
+ len += strlen (name) + 1; /* Object name. */
+
+ free (name);
+
+ name = lrealpath (bfd_get_filename (in->my_archive));
+
+ len += strlen (name) + 1; /* Archive name. */
+
+ free (name);
+ }
+ else
+ {
+ char *name = lrealpath (bfd_get_filename (in));
+ size_t name_len = strlen (name) + 1;
+
+ len += name_len; /* Object name. */
+ len += name_len; /* And again as the archive name. */
+
+ free (name);
+ }
+
+ if (len % 4)
+ len += 4 - (len % 4);
+
+ *size += len;
+
+ source->mod_count++;
+ }
+
+ *data = xmalloc (*size);
+
+ ptr = *data;
+
+ source->mods = xmalloc (source->mod_count
+ * sizeof (struct mod_source_files));
+ memset (source->mods, 0,
+ source->mod_count * sizeof (struct mod_source_files));
+
+ mod_num = 0;
+
+ for (bfd *in = coff_data (abfd)->link_info->input_bfds; in;
+ in = in->link.next)
+ {
+ struct module_info *mod = (struct module_info *) ptr;
+ uint16_t stream_num;
+ bfd *stream;
+ uint32_t sym_byte_size, c13_info_size;
+ uint8_t *start = ptr;
+
+ stream = add_stream (pdb, NULL, &stream_num);
+
+ if (!stream)
+ {
+ for (unsigned int i = 0; i < source->mod_count; i++)
+ {
+ free (source->mods[i].files);
+ }
+
+ free (source->mods);
+ free (*data);
+ return false;
+ }
+
+ if (!populate_module_stream (stream, in, &sym_byte_size,
+ strings, &c13_info_size,
+ &source->mods[mod_num]))
+ {
+ for (unsigned int i = 0; i < source->mod_count; i++)
+ {
+ free (source->mods[i].files);
+ }
+
+ free (source->mods);
+ free (*data);
+ return false;
+ }
+
+ bfd_putl32 (0, &mod->unused1);
+
+ /* These are dummy values - MSVC copies the first section contribution
+ entry here, but doesn't seem to use it for anything. */
+ bfd_putl16 (0xffff, &mod->sc.section);
+ bfd_putl16 (0, &mod->sc.padding1);
+ bfd_putl32 (0, &mod->sc.offset);
+ bfd_putl32 (0xffffffff, &mod->sc.size);
+ bfd_putl32 (0, &mod->sc.characteristics);
+ bfd_putl16 (0xffff, &mod->sc.module_index);
+ bfd_putl16 (0, &mod->sc.padding2);
+ bfd_putl32 (0, &mod->sc.data_crc);
+ bfd_putl32 (0, &mod->sc.reloc_crc);
+
+ bfd_putl16 (0, &mod->flags);
+ bfd_putl16 (stream_num, &mod->module_sym_stream);
+ bfd_putl32 (sym_byte_size, &mod->sym_byte_size);
+ bfd_putl32 (0, &mod->c11_byte_size);
+ bfd_putl32 (c13_info_size, &mod->c13_byte_size);
+ bfd_putl16 (0, &mod->source_file_count);
+ bfd_putl16 (0, &mod->padding);
+ bfd_putl32 (0, &mod->unused2);
+ bfd_putl32 (0, &mod->source_file_name_index);
+ bfd_putl32 (0, &mod->pdb_file_path_name_index);
+
+ ptr += sizeof (struct module_info);
+
+ if (!strcmp (bfd_get_filename (in), "dll stuff"))
+ {
+ /* Object name. */
+ memcpy (ptr, linker_fn, sizeof (linker_fn));
+ ptr += sizeof (linker_fn);
+
+ /* Empty module name. */
+ *ptr = 0;
+ ptr++;
+ }
+ else if (in->my_archive)
+ {
+ char *name = lrealpath (bfd_get_filename (in));
+ size_t name_len = strlen (name) + 1;
+
+ /* Object name. */
+ memcpy (ptr, name, name_len);
+ ptr += name_len;
+
+ free (name);
+
+ name = lrealpath (bfd_get_filename (in->my_archive));
+ name_len = strlen (name) + 1;
+
+ /* Archive name. */
+ memcpy (ptr, name, name_len);
+ ptr += name_len;
+
+ free (name);
+ }
+ else
+ {
+ char *name = lrealpath (bfd_get_filename (in));
+ size_t name_len = strlen (name) + 1;
+
+ /* Object name. */
+ memcpy (ptr, name, name_len);
+ ptr += name_len;
+
+ /* Object name again as archive name. */
+ memcpy (ptr, name, name_len);
+ ptr += name_len;
+
+ free (name);
+ }
+
+ /* Pad to next four-byte boundary. */
+
+ if ((ptr - start) % 4)
+ {
+ memset (ptr, 0, 4 - ((ptr - start) % 4));
+ ptr += 4 - ((ptr - start) % 4);
+ }
+
+ mod_num++;
+ }
+
+ return true;
+}
+
+/* Return the index of a given output section. */
+static uint16_t
+find_section_number (bfd *abfd, asection *sect)
+{
+ uint16_t i = 1;
+
+ for (asection *s = abfd->sections; s; s = s->next)
+ {
+ if (s == sect)
+ return i;
+
+ /* Empty sections aren't output. */
+ if (s->size != 0)
+ i++;
+ }
+
+ return 0;
+}
+
+/* Create the substream which maps addresses in the image file to locations
+ in the original object files. */
+static bool
+create_section_contrib_substream (bfd *abfd, void **data, uint32_t *size)
+{
+ unsigned int num_sc = 0;
+ struct section_contribution *sc;
+ uint16_t mod_index;
+ char *sect_flags;
+ file_ptr offset;
+
+ for (bfd *in = coff_data (abfd)->link_info->input_bfds; in;
+ in = in->link.next)
+ {
+ for (asection *s = in->sections; s; s = s->next)
+ {
+ if (s->size == 0 || discarded_section (s))
+ continue;
+
+ num_sc++;
+ }
+ }
+
+ *size = sizeof (uint32_t) + (num_sc * sizeof (struct section_contribution));
+ *data = xmalloc (*size);
+
+ bfd_putl32 (SECTION_CONTRIB_VERSION_60, *data);
+
+ /* Read characteristics of outputted sections. */
+
+ sect_flags = xmalloc (sizeof (uint32_t) * abfd->section_count);
+
+ offset = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
+ offset += offsetof (struct external_scnhdr, s_flags);
+
+ for (unsigned int i = 0; i < abfd->section_count; i++)
+ {
+ bfd_seek (abfd, offset, SEEK_SET);
+
+ if (bfd_bread (sect_flags + (i * sizeof (uint32_t)), sizeof (uint32_t),
+ abfd) != sizeof (uint32_t))
+ {
+ free (*data);
+ free (sect_flags);
+ return false;
+ }
+
+ offset += sizeof (struct external_scnhdr);
+ }
+
+ sc =
+ (struct section_contribution *) ((uint8_t *) *data + sizeof (uint32_t));
+
+ mod_index = 0;
+ for (bfd *in = coff_data (abfd)->link_info->input_bfds; in;
+ in = in->link.next)
+ {
+ for (asection *s = in->sections; s; s = s->next)
+ {
+ uint16_t sect_num;
+
+ if (s->size == 0 || discarded_section (s))
+ continue;
+
+ sect_num = find_section_number (abfd, s->output_section);
+
+ memcpy (&sc->characteristics,
+ sect_flags + ((sect_num - 1) * sizeof (uint32_t)),
+ sizeof (uint32_t));
+
+ bfd_putl16 (sect_num, &sc->section);
+ bfd_putl16 (0, &sc->padding1);
+ bfd_putl32 (s->output_offset, &sc->offset);
+ bfd_putl32 (s->size, &sc->size);
+ bfd_putl16 (mod_index, &sc->module_index);
+ bfd_putl16 (0, &sc->padding2);
+ bfd_putl32 (0, &sc->data_crc);
+ bfd_putl32 (0, &sc->reloc_crc);
+
+ sc++;
+ }
+
+ mod_index++;
+ }
+
+ free (sect_flags);
+
+ return true;
+}
+
+/* The source info substream lives within the DBI stream, and lists the
+ source files for each object file (i.e. it's derived from the
+ DEBUG_S_FILECHKSMS parts of the .debug$S sections). This is a bit
+ superfluous, as the filenames are also available in the C13 parts of
+ the module streams, but MSVC relies on it to work properly. */
+static void
+create_source_info_substream (void **data, uint32_t *size,
+ struct source_files_info *source)
+{
+ uint16_t dedupe_source_files_count = 0;
+ uint16_t source_files_count = 0;
+ uint32_t strings_len = 0;
+ uint8_t *ptr;
+
+ /* Loop through the source files, marking unique filenames. The pointers
+ here are for entries in the main string table, and so have already
+ been deduplicated. */
+
+ for (uint16_t i = 0; i < source->mod_count; i++)
+ {
+ for (uint16_t j = 0; j < source->mods[i].files_count; j++)
+ {
+ if (source->mods[i].files[j])
+ {
+ if (source->mods[i].files[j]->source_file_offset == 0xffffffff)
+ {
+ source->mods[i].files[j]->source_file_offset = strings_len;
+ strings_len += source->mods[i].files[j]->len + 1;
+ dedupe_source_files_count++;
+ }
+
+ source_files_count++;
+ }
+ }
+ }
+
+ *size = sizeof (uint16_t) + sizeof (uint16_t);
+ *size += (sizeof (uint16_t) + sizeof (uint16_t)) * source->mod_count;
+ *size += sizeof (uint32_t) * source_files_count;
+ *size += strings_len;
+
+ *data = xmalloc (*size);
+
+ ptr = (uint8_t *) *data;
+
+ /* Write header (module count and source file count). */
+
+ bfd_putl16 (source->mod_count, ptr);
+ ptr += sizeof (uint16_t);
+
+ bfd_putl16 (dedupe_source_files_count, ptr);
+ ptr += sizeof (uint16_t);
+
+ /* Write "ModIndices". As the LLVM documentation puts it, "this array is
+ present, but does not appear to be useful". */
+
+ for (uint16_t i = 0; i < source->mod_count; i++)
+ {
+ bfd_putl16 (i, ptr);
+ ptr += sizeof (uint16_t);
+ }
+
+ /* Write source file count for each module. */
+
+ for (uint16_t i = 0; i < source->mod_count; i++)
+ {
+ bfd_putl16 (source->mods[i].files_count, ptr);
+ ptr += sizeof (uint16_t);
+ }
+
+ /* For each module, write the offsets within the string table
+ for each source file. */
+
+ for (uint16_t i = 0; i < source->mod_count; i++)
+ {
+ for (uint16_t j = 0; j < source->mods[i].files_count; j++)
+ {
+ if (source->mods[i].files[j])
+ {
+ bfd_putl32 (source->mods[i].files[j]->source_file_offset, ptr);
+ ptr += sizeof (uint32_t);
+ }
+ }
+ }
+
+ /* Write the string table. We set source_file_offset to a dummy value for
+ each entry we write, so we don't write duplicate filenames. */
+
+ for (uint16_t i = 0; i < source->mod_count; i++)
+ {
+ for (uint16_t j = 0; j < source->mods[i].files_count; j++)
+ {
+ if (source->mods[i].files[j]
+ && source->mods[i].files[j]->source_file_offset != 0xffffffff)
+ {
+ memcpy (ptr, source->mods[i].files[j]->s,
+ source->mods[i].files[j]->len);
+ ptr += source->mods[i].files[j]->len;
+
+ *ptr = 0;
+ ptr++;
+
+ source->mods[i].files[j]->source_file_offset = 0xffffffff;
+ }
+ }
+ }
+}
+
+/* Stream 4 is the debug information (DBI) stream. */
+static bool
+populate_dbi_stream (bfd *stream, bfd *abfd, bfd *pdb,
+ uint16_t section_header_stream_num,
+ uint16_t sym_rec_stream_num,
+ uint16_t publics_stream_num,
+ struct string_table *strings)
+{
+ struct pdb_dbi_stream_header h;
+ struct optional_dbg_header opt;
+ void *mod_info, *sc, *source_info;
+ uint32_t mod_info_size, sc_size, source_info_size;
+ struct source_files_info source;
+
+ source.mod_count = 0;
+ source.mods = NULL;
+
+ if (!create_module_info_substream (abfd, pdb, &mod_info, &mod_info_size,
+ strings, &source))
+ return false;
+
+ if (!create_section_contrib_substream (abfd, &sc, &sc_size))
+ {
+ for (unsigned int i = 0; i < source.mod_count; i++)
+ {
+ free (source.mods[i].files);
+ }
+ free (source.mods);
+
+ free (mod_info);
+ return false;
+ }
+
+ create_source_info_substream (&source_info, &source_info_size, &source);
+
+ for (unsigned int i = 0; i < source.mod_count; i++)
+ {
+ free (source.mods[i].files);
+ }
+ free (source.mods);
+
+ bfd_putl32 (0xffffffff, &h.version_signature);
+ bfd_putl32 (DBI_STREAM_VERSION_70, &h.version_header);
+ bfd_putl32 (1, &h.age);
+ bfd_putl16 (0xffff, &h.global_stream_index);
+ bfd_putl16 (0x8e1d, &h.build_number); // MSVC 14.29
+ bfd_putl16 (publics_stream_num, &h.public_stream_index);
+ bfd_putl16 (0, &h.pdb_dll_version);
+ bfd_putl16 (sym_rec_stream_num, &h.sym_record_stream);
+ bfd_putl16 (0, &h.pdb_dll_rbld);
+ bfd_putl32 (mod_info_size, &h.mod_info_size);
+ bfd_putl32 (sc_size, &h.section_contribution_size);
+ bfd_putl32 (0, &h.section_map_size);
+ bfd_putl32 (source_info_size, &h.source_info_size);
+ bfd_putl32 (0, &h.type_server_map_size);
+ bfd_putl32 (0, &h.mfc_type_server_index);
+ bfd_putl32 (sizeof (opt), &h.optional_dbg_header_size);
+ bfd_putl32 (0, &h.ec_substream_size);
+ bfd_putl16 (0, &h.flags);
+ bfd_putl16 (get_arch_number (abfd), &h.machine);
+ bfd_putl32 (0, &h.padding);
+
+ if (bfd_bwrite (&h, sizeof (h), stream) != sizeof (h))
+ {
+ free (source_info);
+ free (sc);
+ free (mod_info);
+ return false;
+ }
+
+ if (bfd_bwrite (mod_info, mod_info_size, stream) != mod_info_size)
+ {
+ free (source_info);
+ free (sc);
+ free (mod_info);
+ return false;
+ }
+
+ free (mod_info);
+
+ if (bfd_bwrite (sc, sc_size, stream) != sc_size)
+ {
+ free (source_info);
+ free (sc);
+ return false;
+ }
+
+ free (sc);
+
+ if (bfd_bwrite (source_info, source_info_size, stream) != source_info_size)
+ {
+ free (source_info);
+ return false;
+ }
+
+ free (source_info);
+
+ bfd_putl16 (0xffff, &opt.fpo_stream);
+ bfd_putl16 (0xffff, &opt.exception_stream);
+ bfd_putl16 (0xffff, &opt.fixup_stream);
+ bfd_putl16 (0xffff, &opt.omap_to_src_stream);
+ bfd_putl16 (0xffff, &opt.omap_from_src_stream);
+ bfd_putl16 (section_header_stream_num, &opt.section_header_stream);
+ bfd_putl16 (0xffff, &opt.token_map_stream);
+ bfd_putl16 (0xffff, &opt.xdata_stream);
+ bfd_putl16 (0xffff, &opt.pdata_stream);
+ bfd_putl16 (0xffff, &opt.new_fpo_stream);
+ bfd_putl16 (0xffff, &opt.orig_section_header_stream);
+
+ if (bfd_bwrite (&opt, sizeof (opt), stream) != sizeof (opt))
+ return false;
+
+ return true;
+}
+
+/* Used as parameter to qsort, to sort publics by hash. */
+static int
+public_compare_hash (const void *s1, const void *s2)
+{
+ const struct public *p1 = *(const struct public **) s1;
+ const struct public *p2 = *(const struct public **) s2;
+
+ if (p1->hash < p2->hash)
+ return -1;
+ if (p1->hash > p2->hash)
+ return 1;
+
+ return 0;
+}
+
+/* Used as parameter to qsort, to sort publics by address. */
+static int
+public_compare_addr (const void *s1, const void *s2)
+{
+ const struct public *p1 = *(const struct public **) s1;
+ const struct public *p2 = *(const struct public **) s2;
+
+ if (p1->section < p2->section)
+ return -1;
+ if (p1->section > p2->section)
+ return 1;
+
+ if (p1->address < p2->address)
+ return -1;
+ if (p1->address > p2->address)
+ return 1;
+
+ return 0;
+}
+
+/* The publics stream is a hash map of S_PUB32 records, which are stored
+ in the symbol record stream. Each S_PUB32 entry represents a symbol
+ from the point of view of the linker: a section index, an offset within
+ the section, and a mangled name. Compare with S_GDATA32 and S_GPROC32,
+ which are the same thing but generated by the compiler. */
+static bool
+populate_publics_stream (bfd *stream, bfd *abfd, bfd *sym_rec_stream)
+{
+ struct publics_header header;
+ struct globals_hash_header hash_header;
+ const unsigned int num_buckets = 4096;
+ unsigned int num_entries = 0, filled_buckets = 0;
+ unsigned int buckets_size, sym_hash_size;
+ char int_buf[sizeof (uint32_t)];
+ struct public *publics_head = NULL, *publics_tail = NULL;
+ struct public **buckets;
+ struct public **sorted = NULL;
+ bool ret = false;
+
+ buckets = xmalloc (sizeof (struct public *) * num_buckets);
+ memset (buckets, 0, sizeof (struct public *) * num_buckets);
+
+ /* Loop through the global symbols in our input files, and write S_PUB32
+ records in the symbol record stream for those that make it into the
+ final image. */
+ for (bfd *in = coff_data (abfd)->link_info->input_bfds; in;
+ in = in->link.next)
+ {
+ if (!in->outsymbols)
+ continue;
+
+ for (unsigned int i = 0; i < in->symcount; i++)
+ {
+ struct bfd_symbol *sym = in->outsymbols[i];
+
+ if (sym->flags & BSF_GLOBAL)
+ {
+ struct pubsym ps;
+ uint16_t record_length;
+ const char *name = sym->name;
+ size_t name_len = strlen (name);
+ struct public *p = xmalloc (sizeof (struct public));
+ unsigned int padding = 0;
+ uint16_t section;
+ uint32_t flags = 0;
+
+ section =
+ find_section_number (abfd, sym->section->output_section);
+
+ if (section == 0)
+ continue;
+
+ p->next = NULL;
+ p->offset = bfd_tell (sym_rec_stream);
+ p->hash = calc_hash (name, name_len) % num_buckets;
+ p->section = section;
+ p->address = sym->section->output_offset + sym->value;
+
+ record_length = sizeof (struct pubsym) + name_len + 1;
+
+ if (record_length % 4)
+ padding = 4 - (record_length % 4);
+
+ /* Assume that all global symbols in executable sections
+ are functions. */
+ if (sym->section->flags & SEC_CODE)
+ flags = PUBSYM_FUNCTION;
+
+ bfd_putl16 (record_length + padding - sizeof (uint16_t),
+ &ps.record_length);
+ bfd_putl16 (S_PUB32, &ps.record_type);
+ bfd_putl32 (flags, &ps.flags);
+ bfd_putl32 (p->address, &ps.offset);
+ bfd_putl16 (p->section, &ps.section);
+
+ if (bfd_bwrite (&ps, sizeof (struct pubsym), sym_rec_stream) !=
+ sizeof (struct pubsym))
+ goto end;
+
+ if (bfd_bwrite (name, name_len + 1, sym_rec_stream) !=
+ name_len + 1)
+ goto end;
+
+ for (unsigned int j = 0; j < padding; j++)
+ {
+ uint8_t b = 0;
+
+ if (bfd_bwrite (&b, sizeof (uint8_t), sym_rec_stream) !=
+ sizeof (uint8_t))
+ goto end;
+ }
+
+ if (!publics_head)
+ publics_head = p;
+ else
+ publics_tail->next = p;
+
+ publics_tail = p;
+ num_entries++;
+ }
+ }
+ }
+
+
+ if (num_entries > 0)
+ {
+ /* Create an array of pointers, sorted by hash value. */
+
+ sorted = xmalloc (sizeof (struct public *) * num_entries);
+
+ struct public *p = publics_head;
+ for (unsigned int i = 0; i < num_entries; i++)
+ {
+ sorted[i] = p;
+ p = p->next;
+ }
+
+ qsort (sorted, num_entries, sizeof (struct public *),
+ public_compare_hash);
+
+ /* Populate the buckets. */
+
+ for (unsigned int i = 0; i < num_entries; i++)
+ {
+ if (!buckets[sorted[i]->hash])
+ {
+ buckets[sorted[i]->hash] = sorted[i];
+ filled_buckets++;
+ }
+
+ sorted[i]->index = i;
+ }
+ }
+
+ buckets_size = num_buckets / 8;
+ buckets_size += sizeof (uint32_t);
+ buckets_size += filled_buckets * sizeof (uint32_t);
+
+ sym_hash_size = sizeof (hash_header);
+ sym_hash_size += num_entries * sizeof (struct hash_record);
+ sym_hash_size += buckets_size;
+
+ /* Output the publics header. */
+
+ bfd_putl32 (sym_hash_size, &header.sym_hash_size);
+ bfd_putl32 (num_entries * sizeof (uint32_t), &header.addr_map_size);
+ bfd_putl32 (0, &header.num_thunks);
+ bfd_putl32 (0, &header.thunks_size);
+ bfd_putl32 (0, &header.thunk_table);
+ bfd_putl32 (0, &header.thunk_table_offset);
+ bfd_putl32 (0, &header.num_sects);
+
+ if (bfd_bwrite (&header, sizeof (header), stream) != sizeof (header))
+ goto end;
+
+ /* Output the global hash header. */
+
+ bfd_putl32 (GLOBALS_HASH_SIGNATURE, &hash_header.signature);
+ bfd_putl32 (GLOBALS_HASH_VERSION_70, &hash_header.version);
+ bfd_putl32 (num_entries * sizeof (struct hash_record),
+ &hash_header.entries_size);
+ bfd_putl32 (buckets_size, &hash_header.buckets_size);
+
+ if (bfd_bwrite (&hash_header, sizeof (hash_header), stream) !=
+ sizeof (hash_header))
+ goto end;
+
+ /* Write the entries in hash order. */
+
+ for (unsigned int i = 0; i < num_entries; i++)
+ {
+ struct hash_record hr;
+
+ bfd_putl32 (sorted[i]->offset + 1, &hr.offset);
+ bfd_putl32 (1, &hr.reference);
+
+ if (bfd_bwrite (&hr, sizeof (hr), stream) != sizeof (hr))
+ goto end;
+ }
+
+ /* Write the bitmap for filled and unfilled buckets. */
+
+ for (unsigned int i = 0; i < num_buckets; i += 8)
+ {
+ uint8_t v = 0;
+
+ for (unsigned int j = 0; j < 8; j++)
+ {
+ if (buckets[i + j])
+ v |= 1 << j;
+ }
+
+ if (bfd_bwrite (&v, sizeof (v), stream) != sizeof (v))
+ goto end;
+ }
+
+ /* Add a 4-byte gap. */
+
+ bfd_putl32 (0, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) != sizeof (uint32_t))
+ goto end;
+
+ /* Write the bucket offsets. */
+
+ for (unsigned int i = 0; i < num_buckets; i++)
+ {
+ if (buckets[i])
+ {
+ /* 0xc is size of internal hash_record structure in
+ Microsoft's parser. */
+ bfd_putl32 (buckets[i]->index * 0xc, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) !=
+ sizeof (uint32_t))
+ goto end;
+ }
+ }
+
+ /* Write the address map: offsets into the symbol record stream of
+ S_PUB32 records, ordered by address. */
+
+ if (num_entries > 0)
+ {
+ qsort (sorted, num_entries, sizeof (struct public *),
+ public_compare_addr);
+
+ for (unsigned int i = 0; i < num_entries; i++)
+ {
+ bfd_putl32 (sorted[i]->offset, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) !=
+ sizeof (uint32_t))
+ goto end;
+ }
+ }
+
+ ret = true;
+
+end:
+ free (buckets);
+
+ while (publics_head)
+ {
+ struct public *p = publics_head->next;
+
+ free (publics_head);
+ publics_head = p;
+ }
+
+ free (sorted);
+
+ return ret;
+}
+
+/* The section header stream contains a copy of the section headers
+ from the PE file, in the same format. */
+static bool
+create_section_header_stream (bfd *pdb, bfd *abfd, uint16_t *num)
+{
+ bfd *stream;
+ unsigned int section_count;
+ file_ptr scn_base;
+ size_t len;
+ char *buf;
+
+ stream = add_stream (pdb, NULL, num);
+ if (!stream)
+ return false;
+
+ section_count = abfd->section_count;
+
+ /* Empty sections aren't output. */
+ for (asection *sect = abfd->sections; sect; sect = sect->next)
+ {
+ if (sect->size == 0)
+ section_count--;
+ }
+
+ if (section_count == 0)
+ return true;
+
+ /* Copy section table from output - it's already been written at this
+ point. */
+
+ scn_base = bfd_coff_filhsz (abfd) + bfd_coff_aoutsz (abfd);
+
+ bfd_seek (abfd, scn_base, SEEK_SET);
+
+ len = section_count * sizeof (struct external_scnhdr);
+ buf = xmalloc (len);
+
+ if (bfd_bread (buf, len, abfd) != len)
+ {
+ free (buf);
+ return false;
+ }
+
+ if (bfd_bwrite (buf, len, stream) != len)
+ {
+ free (buf);
+ return false;
+ }
+
+ free (buf);
+
+ return true;
+}
+
+/* Populate the "/names" named stream, which contains the string table. */
+static bool
+populate_names_stream (bfd *stream, struct string_table *strings)
+{
+ char int_buf[sizeof (uint32_t)];
+ struct string_table_header h;
+ uint32_t num_strings = 0, num_buckets;
+ struct string **buckets;
+
+ bfd_putl32 (STRING_TABLE_SIGNATURE, &h.signature);
+ bfd_putl32 (STRING_TABLE_VERSION, &h.version);
+
+ if (bfd_bwrite (&h, sizeof (h), stream) != sizeof (h))
+ return false;
+
+ bfd_putl32 (strings->strings_len, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) != sizeof (uint32_t))
+ return false;
+
+ int_buf[0] = 0;
+
+ if (bfd_bwrite (int_buf, 1, stream) != 1)
+ return false;
+
+ for (struct string *s = strings->strings_head; s; s = s->next)
+ {
+ if (bfd_bwrite (s->s, s->len, stream) != s->len)
+ return false;
+
+ if (bfd_bwrite (int_buf, 1, stream) != 1)
+ return false;
+
+ num_strings++;
+ }
+
+ num_buckets = num_strings * 2;
+
+ buckets = xmalloc (sizeof (struct string *) * num_buckets);
+ memset (buckets, 0, sizeof (struct string *) * num_buckets);
+
+ for (struct string *s = strings->strings_head; s; s = s->next)
+ {
+ uint32_t bucket_num = s->hash % num_buckets;
+
+ while (buckets[bucket_num])
+ {
+ bucket_num++;
+
+ if (bucket_num == num_buckets)
+ bucket_num = 0;
+ }
+
+ buckets[bucket_num] = s;
+ }
+
+ bfd_putl32 (num_buckets, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) != sizeof (uint32_t))
+ {
+ free (buckets);
+ return false;
+ }
+
+ for (unsigned int i = 0; i < num_buckets; i++)
+ {
+ if (buckets[i])
+ bfd_putl32 (buckets[i]->offset, int_buf);
+ else
+ bfd_putl32 (0, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) !=
+ sizeof (uint32_t))
+ {
+ free (buckets);
+ return false;
+ }
+ }
+
+ free (buckets);
+
+ bfd_putl32 (num_strings, int_buf);
+
+ if (bfd_bwrite (int_buf, sizeof (uint32_t), stream) != sizeof (uint32_t))
+ return false;
+
+ return true;
+}
+
+/* Create a PDB debugging file for the PE image file abfd with the build ID
+ guid, stored at pdb_name. */
+bool
+create_pdb_file (bfd *abfd, const char *pdb_name, const unsigned char *guid)
+{
+ bfd *pdb;
+ bool ret = false;
+ bfd *info_stream, *dbi_stream, *names_stream, *sym_rec_stream,
+ *publics_stream;
+ uint16_t section_header_stream_num, sym_rec_stream_num, publics_stream_num;
+ struct string_table strings;
+
+ pdb = bfd_openw (pdb_name, "pdb");
+ if (!pdb)
+ {
+ einfo (_("%P: warning: cannot create PDB file: %E\n"));
+ return false;
+ }
+
+ strings.strings_head = NULL;
+ strings.strings_tail = NULL;
+ strings.strings_len = 1;
+ strings.hashmap = htab_create_alloc (0, hash_string_table_entry,
+ eq_string_table_entry, free,
+ xcalloc, free);
+
+ bfd_set_format (pdb, bfd_archive);
+
+ if (!create_old_directory_stream (pdb))
+ {
+ einfo (_("%P: warning: cannot create old directory stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ info_stream = add_stream (pdb, NULL, NULL);
+
+ if (!info_stream)
+ {
+ einfo (_("%P: warning: cannot create info stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ if (!create_type_stream (pdb))
+ {
+ einfo (_("%P: warning: cannot create TPI stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ dbi_stream = add_stream (pdb, NULL, NULL);
+
+ if (!dbi_stream)
+ {
+ einfo (_("%P: warning: cannot create DBI stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ if (!create_type_stream (pdb))
+ {
+ einfo (_("%P: warning: cannot create IPI stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ names_stream = add_stream (pdb, "/names", NULL);
+
+ if (!names_stream)
+ {
+ einfo (_("%P: warning: cannot create /names stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ sym_rec_stream = add_stream (pdb, NULL, &sym_rec_stream_num);
+
+ if (!sym_rec_stream)
+ {
+ einfo (_("%P: warning: cannot create symbol record stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ publics_stream = add_stream (pdb, NULL, &publics_stream_num);
+
+ if (!publics_stream)
+ {
+ einfo (_("%P: warning: cannot create publics stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ if (!create_section_header_stream (pdb, abfd, §ion_header_stream_num))
+ {
+ einfo (_("%P: warning: cannot create section header stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ if (!populate_dbi_stream (dbi_stream, abfd, pdb, section_header_stream_num,
+ sym_rec_stream_num, publics_stream_num,
+ &strings))
+ {
+ einfo (_("%P: warning: cannot populate DBI stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ add_string ("", 0, &strings);
+
+ if (!populate_names_stream (names_stream, &strings))
+ {
+ einfo (_("%P: warning: cannot populate names stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ if (!populate_publics_stream (publics_stream, abfd, sym_rec_stream))
+ {
+ einfo (_("%P: warning: cannot populate publics stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ if (!populate_info_stream (pdb, info_stream, guid))
+ {
+ einfo (_("%P: warning: cannot populate info stream "
+ "in PDB file: %E\n"));
+ goto end;
+ }
+
+ ret = true;
+
+end:
+ bfd_close (pdb);
+
+ htab_delete (strings.hashmap);
return ret;
}
projects / binutils-gdb.git / blobdiff