-/* Return the path name for a proxy entry in a thin archive, adjusted relative
- to the path name of the thin archive itself if necessary. Always returns
- a pointer to malloc'ed memory. */
-
-static char *
-adjust_relative_path (const char *file_name, char * name, int name_len)
-{
- char * member_file_name;
- const char * base_name = lbasename (file_name);
-
- /* This is a proxy entry for a thin archive member.
- If the extended name table contains an absolute path
- name, or if the archive is in the current directory,
- use the path name as given. Otherwise, we need to
- find the member relative to the directory where the
- archive is located. */
- if (IS_ABSOLUTE_PATH (name) || base_name == file_name)
- {
- member_file_name = malloc (name_len + 1);
- if (member_file_name == NULL)
- {
- non_fatal (_("Out of memory\n"));
- return NULL;
- }
- memcpy (member_file_name, name, name_len);
- member_file_name[name_len] = '\0';
- }
- else
- {
- /* Concatenate the path components of the archive file name
- to the relative path name from the extended name table. */
- size_t prefix_len = base_name - file_name;
- member_file_name = malloc (prefix_len + name_len + 1);
- if (member_file_name == NULL)
- {
- non_fatal (_("Out of memory\n"));
- return NULL;
- }
- memcpy (member_file_name, file_name, prefix_len);
- memcpy (member_file_name + prefix_len, name, name_len);
- member_file_name[prefix_len + name_len] = '\0';
- }
- return member_file_name;
-}
-
-/* Structure to hold information about an archive file. */
-
-struct archive_info
-{
- char * file_name; /* Archive file name. */
- FILE * file; /* Open file descriptor. */
- unsigned long index_num; /* Number of symbols in table. */
- unsigned long * index_array; /* The array of member offsets. */
- char * sym_table; /* The symbol table. */
- unsigned long sym_size; /* Size of the symbol table. */
- char * longnames; /* The long file names table. */
- unsigned long longnames_size; /* Size of the long file names table. */
- unsigned long nested_member_origin; /* Origin in the nested archive of the current member. */
- unsigned long next_arhdr_offset; /* Offset of the next archive header. */
- bfd_boolean is_thin_archive; /* TRUE if this is a thin archive. */
- struct ar_hdr arhdr; /* Current archive header. */
-};
-
-/* Read the symbol table and long-name table from an archive. */
-
-static int
-setup_archive (struct archive_info * arch, const char * file_name,
- FILE * file, bfd_boolean is_thin_archive)
-{
- size_t got;
- unsigned long size;
-
- arch->file_name = strdup (file_name);
- arch->file = file;
- arch->index_num = 0;
- arch->index_array = NULL;
- arch->sym_table = NULL;
- arch->sym_size = 0;
- arch->longnames = NULL;
- arch->longnames_size = 0;
- arch->nested_member_origin = 0;
- arch->is_thin_archive = is_thin_archive;
- arch->next_arhdr_offset = SARMAG;
-
- /* Read the first archive member header. */
- if (fseek (file, SARMAG, SEEK_SET) != 0)
- {
- non_fatal (_("%s: failed to seek to first archive header\n"),
- file_name);
- return 1;
- }
- got = fread (&arch->arhdr, 1, sizeof arch->arhdr, file);
- if (got != sizeof arch->arhdr)
- {
- if (got == 0)
- return 0;
-
- non_fatal (_("%s: failed to read archive header\n"), file_name);
- return 1;
- }
-
- /* See if this is the archive symbol table. */
- if (const_strneq (arch->arhdr.ar_name, "/ ")
- || const_strneq (arch->arhdr.ar_name, "/SYM64/ "))
- {
- size = strtoul (arch->arhdr.ar_size, NULL, 10);
- size = size + (size & 1);
-
- arch->next_arhdr_offset += sizeof arch->arhdr + size;
-
- if (fseek (file, size, SEEK_CUR) != 0)
- {
- non_fatal (_("%s: failed to skip archive symbol table\n"),
- file_name);
- return 1;
- }
-
- /* Read the next archive header. */
- got = fread (&arch->arhdr, 1, sizeof arch->arhdr, file);
- if (got != sizeof arch->arhdr)
- {
- if (got == 0)
- return 0;
- non_fatal (_("%s: failed to read archive header following archive index\n"),
- file_name);
- return 1;
- }
- }
-
- if (const_strneq (arch->arhdr.ar_name, "// "))
- {
- /* This is the archive string table holding long member names. */
- arch->longnames_size = strtoul (arch->arhdr.ar_size, NULL, 10);
- arch->next_arhdr_offset += sizeof arch->arhdr + arch->longnames_size;
-
- arch->longnames = malloc (arch->longnames_size);
- if (arch->longnames == NULL)
- {
- non_fatal (_("Out of memory reading long symbol names in archive\n"));
- return 1;
- }
-
- if (fread (arch->longnames, arch->longnames_size, 1, file) != 1)
- {
- free (arch->longnames);
- arch->longnames = NULL;
- non_fatal (_("%s: failed to read long symbol name string table\n")
- , file_name);
- return 1;
- }
-
- if ((arch->longnames_size & 1) != 0)
- getc (file);
- }
-
- return 0;
-}
-
-/* Release the memory used for the archive information. */
-
-static void
-release_archive (struct archive_info * arch)
-{
- if (arch->file_name != NULL)
- free (arch->file_name);
- if (arch->index_array != NULL)
- free (arch->index_array);
- if (arch->sym_table != NULL)
- free (arch->sym_table);
- if (arch->longnames != NULL)
- free (arch->longnames);
-}
-
-/* Open and setup a nested archive, if not already open. */
-
-static int
-setup_nested_archive (struct archive_info * nested_arch, char * member_file_name)
-{
- FILE * member_file;
-
- /* Have we already setup this archive? */
- if (nested_arch->file_name != NULL
- && streq (nested_arch->file_name, member_file_name))
- return 0;
-
- /* Close previous file and discard cached information. */
- if (nested_arch->file != NULL)
- fclose (nested_arch->file);
- release_archive (nested_arch);
-
- member_file = fopen (member_file_name, "r+b");
- if (member_file == NULL)
- return 1;
- return setup_archive (nested_arch, member_file_name, member_file,
- FALSE);
-}
-
-static char *
-get_archive_member_name_at (struct archive_info * arch,
- unsigned long offset,
- struct archive_info * nested_arch);
-
-/* Get the name of an archive member from the current archive header.
- For simple names, this will modify the ar_name field of the current
- archive header. For long names, it will return a pointer to the
- longnames table. For nested archives, it will open the nested archive
- and get the name recursively. NESTED_ARCH is a single-entry cache so
- we don't keep rereading the same information from a nested archive. */
-
-static char *
-get_archive_member_name (struct archive_info * arch,
- struct archive_info * nested_arch)
-{
- unsigned long j, k;
-
- if (arch->arhdr.ar_name[0] == '/')
- {
- /* We have a long name. */
- char * endp;
- char * member_file_name;
- char * member_name;
-
- arch->nested_member_origin = 0;
- k = j = strtoul (arch->arhdr.ar_name + 1, &endp, 10);
- if (arch->is_thin_archive && endp != NULL && * endp == ':')
- arch->nested_member_origin = strtoul (endp + 1, NULL, 10);
-
- while ((j < arch->longnames_size)
- && (arch->longnames[j] != '\n')
- && (arch->longnames[j] != '\0'))
- j++;
- if (arch->longnames[j-1] == '/')
- j--;
- arch->longnames[j] = '\0';
-
- if (!arch->is_thin_archive || arch->nested_member_origin == 0)
- return arch->longnames + k;
-
- /* This is a proxy for a member of a nested archive.
- Find the name of the member in that archive. */
- member_file_name = adjust_relative_path (arch->file_name,
- arch->longnames + k,
- j - k);
- if (member_file_name != NULL
- && setup_nested_archive (nested_arch, member_file_name) == 0
- && (member_name = get_archive_member_name_at (nested_arch,
- arch->nested_member_origin,
- NULL)) != NULL)
- {
- free (member_file_name);
- return member_name;
- }
- free (member_file_name);
-
- /* Last resort: just return the name of the nested archive. */
- return arch->longnames + k;
- }
-
- /* We have a normal (short) name. */
- j = 0;
- while ((arch->arhdr.ar_name[j] != '/') && (j < 16))
- j++;
- arch->arhdr.ar_name[j] = '\0';
- return arch->arhdr.ar_name;
-}
-
-/* Get the name of an archive member at a given OFFSET within an
- archive ARCH. */
-
-static char *
-get_archive_member_name_at (struct archive_info * arch,
- unsigned long offset,
- struct archive_info * nested_arch)
-{
- size_t got;
-
- if (fseek (arch->file, offset, SEEK_SET) != 0)
- {
- non_fatal (_("%s: failed to seek to next file name\n"),
- arch->file_name);
- return NULL;
- }
- got = fread (&arch->arhdr, 1, sizeof arch->arhdr, arch->file);
- if (got != sizeof arch->arhdr)
- {
- non_fatal (_("%s: failed to read archive header\n"),
- arch->file_name);
- return NULL;
- }
- if (memcmp (arch->arhdr.ar_fmag, ARFMAG, 2) != 0)
- {
- non_fatal (_("%s: did not find a valid archive header\n"),
- arch->file_name);
- return NULL;
- }
-
- return get_archive_member_name (arch, nested_arch);
-}
-
-/* Construct a string showing the name of the archive member, qualified
- with the name of the containing archive file. For thin archives, we
- use square brackets to denote the indirection. For nested archives,
- we show the qualified name of the external member inside the square
- brackets (e.g., "thin.a[normal.a(foo.o)]"). */
-
-static char *
-make_qualified_name (struct archive_info * arch,
- struct archive_info * nested_arch,
- char * member_name)
-{
- size_t len;
- char * name;
-
- len = strlen (arch->file_name) + strlen (member_name) + 3;
- if (arch->is_thin_archive && arch->nested_member_origin != 0)
- len += strlen (nested_arch->file_name) + 2;
-
- name = malloc (len);
- if (name == NULL)
- {
- non_fatal (_("Out of memory\n"));
- return NULL;
- }
-
- if (arch->is_thin_archive && arch->nested_member_origin != 0)
- snprintf (name, len, "%s[%s(%s)]", arch->file_name, nested_arch->file_name, member_name);
- else if (arch->is_thin_archive)
- snprintf (name, len, "%s[%s]", arch->file_name, member_name);
- else
- snprintf (name, len, "%s(%s)", arch->file_name, member_name);
-
- return name;
-}
-
projects / deliverable / binutils-gdb.git / blobdiff