1 /* Support for 64-bit archives.
2 Copyright (C) 1996-2016 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 archives. We use the same format as
25 the 64-bit (MIPS) ELF archives. */
32 /* Irix 6 defines a 64bit archive map format, so that they can
33 have archives more than 4 GB in size. */
35 /* Read an Irix 6 armap. */
38 _bfd_archive_64_bit_slurp_armap (bfd *abfd)
40 struct artdata *ardata = bfd_ardata (abfd);
42 bfd_size_type i, parsed_size, nsymz, stringsize, carsym_size, ptrsize;
43 struct areltdata *mapdata;
47 bfd_byte *raw_armap = NULL;
51 ardata->symdefs = NULL;
53 /* Get the name of the first element. */
54 i = bfd_bread (nextname, 16, abfd);
60 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
63 /* Archives with traditional armaps are still permitted. */
64 if (CONST_STRNEQ (nextname, "/ "))
65 return bfd_slurp_armap (abfd);
67 if (! CONST_STRNEQ (nextname, "/SYM64/ "))
69 bfd_has_map (abfd) = FALSE;
73 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
76 parsed_size = mapdata->parsed_size;
79 if (bfd_bread (int_buf, 8, abfd) != 8)
81 if (bfd_get_error () != bfd_error_system_call)
82 bfd_set_error (bfd_error_malformed_archive);
86 nsymz = bfd_getb64 (int_buf);
87 stringsize = parsed_size - 8 * nsymz - 8;
89 carsym_size = nsymz * sizeof (carsym);
92 amt = carsym_size + stringsize + 1;
93 if (carsym_size < nsymz || ptrsize < nsymz || amt < nsymz)
95 bfd_set_error (bfd_error_malformed_archive);
98 ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, amt);
99 if (ardata->symdefs == NULL)
101 carsyms = ardata->symdefs;
102 stringbase = ((char *) ardata->symdefs) + carsym_size;
103 stringbase[stringsize] = 0;
104 stringend = stringbase + stringsize;
106 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
107 if (raw_armap == NULL)
108 goto release_symdefs;
110 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
111 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
113 if (bfd_get_error () != bfd_error_system_call)
114 bfd_set_error (bfd_error_malformed_archive);
115 goto release_raw_armap;
118 for (i = 0; i < nsymz; i++)
120 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
121 carsyms->name = stringbase;
122 if (stringbase < stringend)
123 stringbase += strlen (stringbase) + 1;
128 ardata->symdef_count = nsymz;
129 ardata->first_file_filepos = bfd_tell (abfd);
130 /* Pad to an even boundary if you have to. */
131 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
133 bfd_has_map (abfd) = TRUE;
134 bfd_release (abfd, raw_armap);
139 bfd_release (abfd, raw_armap);
141 bfd_release (abfd, ardata->symdefs);
145 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
146 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
150 _bfd_archive_64_bit_write_armap (bfd *arch,
151 unsigned int elength,
153 unsigned int symbol_count,
156 unsigned int ranlibsize = (symbol_count * 8) + 8;
157 unsigned int stringsize = stridx;
158 unsigned int mapsize = stringsize + ranlibsize;
159 file_ptr archive_member_file_ptr;
160 bfd *current = arch->archive_head;
166 padding = BFD_ALIGN (mapsize, 8) - mapsize;
169 /* work out where the first object file will go in the archive */
170 archive_member_file_ptr = (mapsize
172 + sizeof (struct ar_hdr)
175 memset (&hdr, ' ', sizeof (struct ar_hdr));
176 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
177 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize))
179 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
181 /* This, at least, is what Intel coff sets the values to.: */
182 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
183 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
184 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
185 memcpy (hdr.ar_fmag, ARFMAG, 2);
187 /* Write the ar header for this item and the number of symbols */
189 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
190 != sizeof (struct ar_hdr))
193 bfd_putb64 ((bfd_vma) symbol_count, buf);
194 if (bfd_bwrite (buf, 8, arch) != 8)
197 /* Two passes, first write the file offsets for each symbol -
198 remembering that each offset is on a two byte boundary. */
200 /* Write out the file offset for the file associated with each
201 symbol, and remember to keep the offsets padded out. */
203 for (current = arch->archive_head;
204 current != NULL && count < symbol_count;
205 current = current->archive_next)
207 /* For each symbol which is used defined in this object, write out
208 the object file's address in the archive. */
211 count < symbol_count && map[count].u.abfd == current;
214 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
215 if (bfd_bwrite (buf, 8, arch) != 8)
219 /* Add size of this archive entry */
220 archive_member_file_ptr += sizeof (struct ar_hdr);
221 if (! bfd_is_thin_archive (arch))
222 archive_member_file_ptr += arelt_size (current);
223 /* remember about the even alignment */
224 archive_member_file_ptr += archive_member_file_ptr % 2;
227 /* now write the strings themselves */
228 for (count = 0; count < symbol_count; count++)
230 size_t len = strlen (*map[count].name) + 1;
232 if (bfd_bwrite (*map[count].name, len, arch) != len)
236 /* The spec says that this should be padded to an 8 byte boundary.
237 However, the Irix 6.2 tools do not appear to do this. */
240 if (bfd_bwrite ("", 1, arch) != 1)