1 /* Support for 64-bit ELF archives.
2 Copyright (C) 1996-2014 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;
49 bfd_byte *raw_armap = NULL;
53 ardata->symdefs = NULL;
55 /* Get the name of the first element. */
56 i = bfd_bread (nextname, 16, abfd);
62 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
65 /* Archives with traditional armaps are still permitted. */
66 if (CONST_STRNEQ (nextname, "/ "))
67 return bfd_slurp_armap (abfd);
69 if (! CONST_STRNEQ (nextname, "/SYM64/ "))
71 bfd_has_map (abfd) = FALSE;
75 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
78 parsed_size = mapdata->parsed_size;
81 if (bfd_bread (int_buf, 8, abfd) != 8)
83 if (bfd_get_error () != bfd_error_system_call)
84 bfd_set_error (bfd_error_malformed_archive);
88 nsymz = bfd_getb64 (int_buf);
89 stringsize = parsed_size - 8 * nsymz - 8;
91 carsym_size = nsymz * sizeof (carsym);
94 amt = carsym_size + stringsize + 1;
95 ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, amt);
96 if (ardata->symdefs == NULL)
98 carsyms = ardata->symdefs;
99 stringbase = ((char *) ardata->symdefs) + carsym_size;
101 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
102 if (raw_armap == NULL)
103 goto release_symdefs;
105 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
106 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
108 if (bfd_get_error () != bfd_error_system_call)
109 bfd_set_error (bfd_error_malformed_archive);
110 goto release_raw_armap;
113 for (i = 0; i < nsymz; i++)
115 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
116 carsyms->name = stringbase;
117 stringbase += strlen (stringbase) + 1;
122 ardata->symdef_count = nsymz;
123 ardata->first_file_filepos = bfd_tell (abfd);
124 /* Pad to an even boundary if you have to. */
125 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
127 bfd_has_map (abfd) = TRUE;
128 bfd_release (abfd, raw_armap);
133 bfd_release (abfd, raw_armap);
135 bfd_release (abfd, ardata->symdefs);
139 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
140 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
144 bfd_elf64_archive_write_armap (bfd *arch,
145 unsigned int elength,
147 unsigned int symbol_count,
150 unsigned int ranlibsize = (symbol_count * 8) + 8;
151 unsigned int stringsize = stridx;
152 unsigned int mapsize = stringsize + ranlibsize;
153 file_ptr archive_member_file_ptr;
154 bfd *current = arch->archive_head;
160 padding = BFD_ALIGN (mapsize, 8) - mapsize;
163 /* work out where the first object file will go in the archive */
164 archive_member_file_ptr = (mapsize
166 + sizeof (struct ar_hdr)
169 memset (&hdr, ' ', sizeof (struct ar_hdr));
170 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
171 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize))
173 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
175 /* This, at least, is what Intel coff sets the values to.: */
176 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
177 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
178 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
179 memcpy (hdr.ar_fmag, ARFMAG, 2);
181 /* Write the ar header for this item and the number of symbols */
183 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
184 != sizeof (struct ar_hdr))
187 bfd_putb64 ((bfd_vma) symbol_count, buf);
188 if (bfd_bwrite (buf, 8, arch) != 8)
191 /* Two passes, first write the file offsets for each symbol -
192 remembering that each offset is on a two byte boundary. */
194 /* Write out the file offset for the file associated with each
195 symbol, and remember to keep the offsets padded out. */
197 for (current = arch->archive_head;
198 current != NULL && count < symbol_count;
199 current = current->archive_next)
201 /* For each symbol which is used defined in this object, write out
202 the object file's address in the archive. */
205 count < symbol_count && map[count].u.abfd == current;
208 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
209 if (bfd_bwrite (buf, 8, arch) != 8)
213 /* Add size of this archive entry */
214 archive_member_file_ptr += sizeof (struct ar_hdr);
215 if (! bfd_is_thin_archive (arch))
216 archive_member_file_ptr += arelt_size (current);
217 /* remember about the even alignment */
218 archive_member_file_ptr += archive_member_file_ptr % 2;
221 /* now write the strings themselves */
222 for (count = 0; count < symbol_count; count++)
224 size_t len = strlen (*map[count].name) + 1;
226 if (bfd_bwrite (*map[count].name, len, arch) != len)
230 /* The spec says that this should be padded to an 8 byte boundary.
231 However, the Irix 6.2 tools do not appear to do this. */
234 if (bfd_bwrite ("", 1, arch) != 1)