bfd/
[binutils.git] / bfd / archive64.c
blob4fc8b851939cffa2f51653fecf6ed791f1d2f73b
1 /* MIPS-specific support for 64-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2006
3 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 2 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, MA 02110-1301, USA. */
24 /* This file supports the 64-bit (MIPS) ELF archives. */
26 #include "bfd.h"
27 #include "sysdep.h"
28 #include "libbfd.h"
29 #include "aout/ar.h"
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. */
40 bfd_boolean
41 bfd_elf64_archive_slurp_armap (bfd *abfd)
43 struct artdata *ardata = bfd_ardata (abfd);
44 char nextname[17];
45 file_ptr arhdrpos;
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 arhdrpos = bfd_tell (abfd);
58 i = bfd_bread (nextname, 16, abfd);
59 if (i == 0)
60 return TRUE;
61 if (i != 16)
62 return FALSE;
64 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
65 return FALSE;
67 /* Archives with traditional armaps are still permitted. */
68 if (CONST_STRNEQ (nextname, "/ "))
69 return bfd_slurp_armap (abfd);
71 if (! CONST_STRNEQ (nextname, "/SYM64/ "))
73 bfd_has_map (abfd) = FALSE;
74 return TRUE;
77 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
78 if (mapdata == NULL)
79 return FALSE;
80 parsed_size = mapdata->parsed_size;
81 bfd_release (abfd, mapdata);
83 if (bfd_bread (int_buf, 8, abfd) != 8)
85 if (bfd_get_error () != bfd_error_system_call)
86 bfd_set_error (bfd_error_malformed_archive);
87 return FALSE;
90 nsymz = bfd_getb64 (int_buf);
91 stringsize = parsed_size - 8 * nsymz - 8;
93 carsym_size = nsymz * sizeof (carsym);
94 ptrsize = 8 * nsymz;
96 amt = carsym_size + stringsize + 1;
97 ardata->symdefs = bfd_zalloc (abfd, amt);
98 if (ardata->symdefs == NULL)
99 return FALSE;
100 carsyms = ardata->symdefs;
101 stringbase = ((char *) ardata->symdefs) + carsym_size;
103 raw_armap = bfd_alloc (abfd, ptrsize);
104 if (raw_armap == NULL)
105 goto release_symdefs;
107 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
108 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
110 if (bfd_get_error () != bfd_error_system_call)
111 bfd_set_error (bfd_error_malformed_archive);
112 goto release_raw_armap;
115 for (i = 0; i < nsymz; i++)
117 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
118 carsyms->name = stringbase;
119 stringbase += strlen (stringbase) + 1;
120 ++carsyms;
122 *stringbase = '\0';
124 ardata->symdef_count = nsymz;
125 ardata->first_file_filepos = bfd_tell (abfd);
126 /* Pad to an even boundary if you have to. */
127 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
129 bfd_has_map (abfd) = TRUE;
130 bfd_release (abfd, raw_armap);
132 return TRUE;
134 release_raw_armap:
135 bfd_release (abfd, raw_armap);
136 release_symdefs:
137 bfd_release (abfd, ardata->symdefs);
138 return FALSE;
141 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
142 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
143 linker crashes. */
145 bfd_boolean
146 bfd_elf64_archive_write_armap (bfd *arch,
147 unsigned int elength,
148 struct orl *map,
149 unsigned int symbol_count,
150 int stridx)
152 unsigned int ranlibsize = (symbol_count * 8) + 8;
153 unsigned int stringsize = stridx;
154 unsigned int mapsize = stringsize + ranlibsize;
155 file_ptr archive_member_file_ptr;
156 bfd *current = arch->archive_head;
157 unsigned int count;
158 struct ar_hdr hdr;
159 int padding;
160 bfd_byte buf[8];
162 padding = BFD_ALIGN (mapsize, 8) - mapsize;
163 mapsize += padding;
165 /* work out where the first object file will go in the archive */
166 archive_member_file_ptr = (mapsize
167 + elength
168 + sizeof (struct ar_hdr)
169 + SARMAG);
171 memset (&hdr, ' ', sizeof (struct ar_hdr));
172 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
173 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld",
174 mapsize);
175 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
176 time (NULL));
177 /* This, at least, is what Intel coff sets the values to.: */
178 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
179 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
180 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
181 memcpy (hdr.ar_fmag, ARFMAG, 2);
183 /* Write the ar header for this item and the number of symbols */
185 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
186 != sizeof (struct ar_hdr))
187 return FALSE;
189 bfd_putb64 ((bfd_vma) symbol_count, buf);
190 if (bfd_bwrite (buf, 8, arch) != 8)
191 return FALSE;
193 /* Two passes, first write the file offsets for each symbol -
194 remembering that each offset is on a two byte boundary. */
196 /* Write out the file offset for the file associated with each
197 symbol, and remember to keep the offsets padded out. */
199 current = arch->archive_head;
200 count = 0;
201 while (current != NULL && count < symbol_count)
203 /* For each symbol which is used defined in this object, write out
204 the object file's address in the archive */
206 while (map[count].u.abfd == current)
208 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
209 if (bfd_bwrite (buf, 8, arch) != 8)
210 return FALSE;
211 count++;
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;
218 current = current->next;
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)
227 return FALSE;
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. */
232 while (padding != 0)
234 if (bfd_bwrite ("", 1, arch) != 1)
235 return FALSE;
236 --padding;
239 return TRUE;