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[binutils.git] / bfd / archive64.c
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1 /* MIPS-specific support for 64-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2005, 2006, 2007,
3 2010 Free Software Foundation, Inc.
4 Ian Lance Taylor, Cygnus Support
5 Linker support added by Mark Mitchell, CodeSourcery, LLC.
6 <mark@codesourcery.com>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
25 /* This file supports the 64-bit (MIPS) ELF archives. */
27 #include "sysdep.h"
28 #include "bfd.h"
29 #include "libbfd.h"
30 #include "aout/ar.h"
32 /* Irix 6 defines a 64bit archive map format, so that they can
33 have archives more than 4 GB in size. */
35 bfd_boolean bfd_elf64_archive_slurp_armap (bfd *);
36 bfd_boolean bfd_elf64_archive_write_armap
37 (bfd *, unsigned int, struct orl *, unsigned int, int);
39 /* Read an Irix 6 armap. */
41 bfd_boolean
42 bfd_elf64_archive_slurp_armap (bfd *abfd)
44 struct artdata *ardata = bfd_ardata (abfd);
45 char nextname[17];
46 bfd_size_type i, parsed_size, nsymz, stringsize, carsym_size, ptrsize;
47 struct areltdata *mapdata;
48 bfd_byte int_buf[8];
49 char *stringbase;
50 bfd_byte *raw_armap = NULL;
51 carsym *carsyms;
52 bfd_size_type amt;
54 ardata->symdefs = NULL;
56 /* Get the name of the first element. */
57 i = bfd_bread (nextname, 16, abfd);
58 if (i == 0)
59 return TRUE;
60 if (i != 16)
61 return FALSE;
63 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
64 return FALSE;
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;
73 return TRUE;
76 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
77 if (mapdata == NULL)
78 return FALSE;
79 parsed_size = mapdata->parsed_size;
80 bfd_release (abfd, mapdata);
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);
86 return FALSE;
89 nsymz = bfd_getb64 (int_buf);
90 stringsize = parsed_size - 8 * nsymz - 8;
92 carsym_size = nsymz * sizeof (carsym);
93 ptrsize = 8 * nsymz;
95 amt = carsym_size + stringsize + 1;
96 ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, amt);
97 if (ardata->symdefs == NULL)
98 return FALSE;
99 carsyms = ardata->symdefs;
100 stringbase = ((char *) ardata->symdefs) + carsym_size;
102 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
103 if (raw_armap == NULL)
104 goto release_symdefs;
106 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
107 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
109 if (bfd_get_error () != bfd_error_system_call)
110 bfd_set_error (bfd_error_malformed_archive);
111 goto release_raw_armap;
114 for (i = 0; i < nsymz; i++)
116 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
117 carsyms->name = stringbase;
118 stringbase += strlen (stringbase) + 1;
119 ++carsyms;
121 *stringbase = '\0';
123 ardata->symdef_count = nsymz;
124 ardata->first_file_filepos = bfd_tell (abfd);
125 /* Pad to an even boundary if you have to. */
126 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
128 bfd_has_map (abfd) = TRUE;
129 bfd_release (abfd, raw_armap);
131 return TRUE;
133 release_raw_armap:
134 bfd_release (abfd, raw_armap);
135 release_symdefs:
136 bfd_release (abfd, ardata->symdefs);
137 return FALSE;
140 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
141 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
142 linker crashes. */
144 bfd_boolean
145 bfd_elf64_archive_write_armap (bfd *arch,
146 unsigned int elength,
147 struct orl *map,
148 unsigned int symbol_count,
149 int stridx)
151 unsigned int ranlibsize = (symbol_count * 8) + 8;
152 unsigned int stringsize = stridx;
153 unsigned int mapsize = stringsize + ranlibsize;
154 file_ptr archive_member_file_ptr;
155 bfd *current = arch->archive_head;
156 unsigned int count;
157 struct ar_hdr hdr;
158 int padding;
159 bfd_byte buf[8];
161 padding = BFD_ALIGN (mapsize, 8) - mapsize;
162 mapsize += padding;
164 /* work out where the first object file will go in the archive */
165 archive_member_file_ptr = (mapsize
166 + elength
167 + sizeof (struct ar_hdr)
168 + SARMAG);
170 memset (&hdr, ' ', sizeof (struct ar_hdr));
171 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
172 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld",
173 mapsize);
174 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
175 time (NULL));
176 /* This, at least, is what Intel coff sets the values to.: */
177 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
178 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
179 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
180 memcpy (hdr.ar_fmag, ARFMAG, 2);
182 /* Write the ar header for this item and the number of symbols */
184 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
185 != sizeof (struct ar_hdr))
186 return FALSE;
188 bfd_putb64 ((bfd_vma) symbol_count, buf);
189 if (bfd_bwrite (buf, 8, arch) != 8)
190 return FALSE;
192 /* Two passes, first write the file offsets for each symbol -
193 remembering that each offset is on a two byte boundary. */
195 /* Write out the file offset for the file associated with each
196 symbol, and remember to keep the offsets padded out. */
197 count = 0;
198 for (current = arch->archive_head;
199 current != NULL && count < symbol_count;
200 current = current->archive_next)
202 /* For each symbol which is used defined in this object, write out
203 the object file's address in the archive */
205 for (;
206 count < symbol_count && map[count].u.abfd == current;
207 count++)
209 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
210 if (bfd_bwrite (buf, 8, arch) != 8)
211 return FALSE;
213 /* Add size of this archive entry */
214 archive_member_file_ptr += (arelt_size (current)
215 + sizeof (struct ar_hdr));
216 /* remember about the even alignment */
217 archive_member_file_ptr += archive_member_file_ptr % 2;
220 /* now write the strings themselves */
221 for (count = 0; count < symbol_count; count++)
223 size_t len = strlen (*map[count].name) + 1;
225 if (bfd_bwrite (*map[count].name, len, arch) != len)
226 return FALSE;
229 /* The spec says that this should be padded to an 8 byte boundary.
230 However, the Irix 6.2 tools do not appear to do this. */
231 while (padding != 0)
233 if (bfd_bwrite ("", 1, arch) != 1)
234 return FALSE;
235 --padding;
238 return TRUE;