1 /* Support for 64-bit archives.
2 Copyright (C) 1996-2019 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 (/* Catch overflow in stringsize (and ptrsize) expression. */
94 nsymz >= (bfd_size_type) -1 / 8
95 || stringsize > parsed_size
96 /* Catch overflow in carsym_size expression. */
97 || nsymz > (bfd_size_type) -1 / sizeof (carsym)
98 /* Catch overflow in amt expression. */
100 || amt <= stringsize)
102 bfd_set_error (bfd_error_malformed_archive);
105 ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, amt);
106 if (ardata->symdefs == NULL)
108 carsyms = ardata->symdefs;
109 stringbase = ((char *) ardata->symdefs) + carsym_size;
111 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
112 if (raw_armap == NULL)
113 goto release_symdefs;
115 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
116 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
118 if (bfd_get_error () != bfd_error_system_call)
119 bfd_set_error (bfd_error_malformed_archive);
120 goto release_raw_armap;
123 stringend = stringbase + stringsize;
125 for (i = 0; i < nsymz; i++)
127 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
128 carsyms->name = stringbase;
129 stringbase += strlen (stringbase);
130 if (stringbase != stringend)
135 ardata->symdef_count = nsymz;
136 ardata->first_file_filepos = bfd_tell (abfd);
137 /* Pad to an even boundary if you have to. */
138 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
140 bfd_has_map (abfd) = TRUE;
141 bfd_release (abfd, raw_armap);
146 bfd_release (abfd, raw_armap);
148 bfd_release (abfd, ardata->symdefs);
152 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
153 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
157 _bfd_archive_64_bit_write_armap (bfd *arch,
158 unsigned int elength,
160 unsigned int symbol_count,
163 unsigned int ranlibsize = (symbol_count * 8) + 8;
164 unsigned int stringsize = stridx;
165 unsigned int mapsize = stringsize + ranlibsize;
166 file_ptr archive_member_file_ptr;
167 bfd *current = arch->archive_head;
173 padding = BFD_ALIGN (mapsize, 8) - mapsize;
176 /* work out where the first object file will go in the archive */
177 archive_member_file_ptr = (mapsize
179 + sizeof (struct ar_hdr)
182 memset (&hdr, ' ', sizeof (struct ar_hdr));
183 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
184 if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize))
186 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
188 /* This, at least, is what Intel coff sets the values to.: */
189 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
190 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
191 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
192 memcpy (hdr.ar_fmag, ARFMAG, 2);
194 /* Write the ar header for this item and the number of symbols */
196 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
197 != sizeof (struct ar_hdr))
200 bfd_putb64 ((bfd_vma) symbol_count, buf);
201 if (bfd_bwrite (buf, 8, arch) != 8)
204 /* Two passes, first write the file offsets for each symbol -
205 remembering that each offset is on a two byte boundary. */
207 /* Write out the file offset for the file associated with each
208 symbol, and remember to keep the offsets padded out. */
210 for (current = arch->archive_head;
211 current != NULL && count < symbol_count;
212 current = current->archive_next)
214 /* For each symbol which is used defined in this object, write out
215 the object file's address in the archive. */
218 count < symbol_count && map[count].u.abfd == current;
221 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
222 if (bfd_bwrite (buf, 8, arch) != 8)
226 /* Add size of this archive entry */
227 archive_member_file_ptr += sizeof (struct ar_hdr);
228 if (! bfd_is_thin_archive (arch))
229 archive_member_file_ptr += arelt_size (current);
230 /* remember about the even alignment */
231 archive_member_file_ptr += archive_member_file_ptr % 2;
234 /* now write the strings themselves */
235 for (count = 0; count < symbol_count; count++)
237 size_t len = strlen (*map[count].name) + 1;
239 if (bfd_bwrite (*map[count].name, len, arch) != len)
243 /* The spec says that this should be padded to an 8 byte boundary.
244 However, the Irix 6.2 tools do not appear to do this. */
247 if (bfd_bwrite ("", 1, arch) != 1)