1 /* Support for 64-bit ELF archives.
2 Copyright (C) 1996-2015 Free Software Foundation, Inc.
3 Ian Lance Taylor, Cygnus Support
4 Linker support added by Mark Mitchell, CodeSourcery, LLC.
5 <mark@codesourcery.com>
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
24 /* This file supports the 64-bit (MIPS) ELF archives. */
31 /* Irix 6 defines a 64bit archive map format, so that they can
32 have archives more than 4 GB in size. */
34 bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
35 bfd_boolean bfd_elf64_archive_write_armap
36 (bfd *, unsigned int, struct orl *, unsigned int, int);
38 /* Read an Irix 6 armap. */
41 bfd_elf64_archive_slurp_armap (bfd *abfd)
43 struct artdata *ardata = bfd_ardata (abfd);
45 bfd_size_type i, parsed_size, nsymz, stringsize, carsym_size, ptrsize;
46 struct areltdata *mapdata;
50 bfd_byte *raw_armap = NULL;
54 ardata->symdefs = NULL;
56 /* Get the name of the first element. */
57 i = bfd_bread (nextname, 16, abfd);
63 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
66 /* Archives with traditional armaps are still permitted. */
67 if (CONST_STRNEQ (nextname, "/ "))
68 return bfd_slurp_armap (abfd);
70 if (! CONST_STRNEQ (nextname, "/SYM64/ "))
72 bfd_has_map (abfd) = FALSE;
76 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
79 parsed_size = mapdata->parsed_size;
82 if (bfd_bread (int_buf, 8, abfd) != 8)
84 if (bfd_get_error () != bfd_error_system_call)
85 bfd_set_error (bfd_error_malformed_archive);
89 nsymz = bfd_getb64 (int_buf);
90 stringsize = parsed_size - 8 * nsymz - 8;
92 carsym_size = nsymz * sizeof (carsym);
95 amt = carsym_size + stringsize + 1;
96 if (carsym_size < nsymz || ptrsize < nsymz || amt < nsymz)
98 bfd_set_error (bfd_error_malformed_archive);
101 ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, amt);
102 if (ardata->symdefs == NULL)
104 carsyms = ardata->symdefs;
105 stringbase = ((char *) ardata->symdefs) + carsym_size;
106 stringbase[stringsize] = 0;
107 stringend = stringbase + stringsize;
109 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
110 if (raw_armap == NULL)
111 goto release_symdefs;
113 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
114 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
116 if (bfd_get_error () != bfd_error_system_call)
117 bfd_set_error (bfd_error_malformed_archive);
118 goto release_raw_armap;
121 for (i = 0; i < nsymz; i++)
123 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
124 carsyms->name = stringbase;
125 if (stringbase < stringend)
126 stringbase += strlen (stringbase) + 1;
131 ardata->symdef_count = nsymz;
132 ardata->first_file_filepos = bfd_tell (abfd);
133 /* Pad to an even boundary if you have to. */
134 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
136 bfd_has_map (abfd) = TRUE;
137 bfd_release (abfd, raw_armap);
142 bfd_release (abfd, raw_armap);
144 bfd_release (abfd, ardata->symdefs);
148 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
149 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
153 bfd_elf64_archive_write_armap (bfd *arch,
154 unsigned int elength,
156 unsigned int symbol_count,
159 unsigned int ranlibsize = (symbol_count * 8) + 8;
160 unsigned int stringsize = stridx;
161 unsigned int mapsize = stringsize + ranlibsize;
162 file_ptr archive_member_file_ptr;
163 bfd *current = arch->archive_head;
169 padding = BFD_ALIGN (mapsize, 8) - mapsize;
172 /* work out where the first object file will go in the archive */
173 archive_member_file_ptr = (mapsize
175 + sizeof (struct ar_hdr)
178 memset (&hdr, ' ', sizeof (struct ar_hdr));
179 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
180 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize))
182 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
184 /* This, at least, is what Intel coff sets the values to.: */
185 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
186 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
187 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
188 memcpy (hdr.ar_fmag, ARFMAG, 2);
190 /* Write the ar header for this item and the number of symbols */
192 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
193 != sizeof (struct ar_hdr))
196 bfd_putb64 ((bfd_vma) symbol_count, buf);
197 if (bfd_bwrite (buf, 8, arch) != 8)
200 /* Two passes, first write the file offsets for each symbol -
201 remembering that each offset is on a two byte boundary. */
203 /* Write out the file offset for the file associated with each
204 symbol, and remember to keep the offsets padded out. */
206 for (current = arch->archive_head;
207 current != NULL && count < symbol_count;
208 current = current->archive_next)
210 /* For each symbol which is used defined in this object, write out
211 the object file's address in the archive. */
214 count < symbol_count && map[count].u.abfd == current;
217 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
218 if (bfd_bwrite (buf, 8, arch) != 8)
222 /* Add size of this archive entry */
223 archive_member_file_ptr += sizeof (struct ar_hdr);
224 if (! bfd_is_thin_archive (arch))
225 archive_member_file_ptr += arelt_size (current);
226 /* remember about the even alignment */
227 archive_member_file_ptr += archive_member_file_ptr % 2;
230 /* now write the strings themselves */
231 for (count = 0; count < symbol_count; count++)
233 size_t len = strlen (*map[count].name) + 1;
235 if (bfd_bwrite (*map[count].name, len, arch) != len)
239 /* The spec says that this should be padded to an 8 byte boundary.
240 However, the Irix 6.2 tools do not appear to do this. */
243 if (bfd_bwrite ("", 1, arch) != 1)