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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
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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 boolean bfd_elf64_archive_slurp_armap PARAMS ((bfd *));
35 boolean bfd_elf64_archive_write_armap
36 PARAMS ((bfd *, unsigned int, struct orl *, unsigned int, int));
38 /* Read an Irix 6 armap. */
40 boolean
41 bfd_elf64_archive_slurp_armap (abfd)
42 bfd *abfd;
44 struct artdata *ardata = bfd_ardata (abfd);
45 char nextname[17];
46 file_ptr arhdrpos;
47 bfd_size_type i, parsed_size, nsymz, stringsize, carsym_size, ptrsize;
48 struct areltdata *mapdata;
49 bfd_byte int_buf[8];
50 char *stringbase;
51 bfd_byte *raw_armap = NULL;
52 carsym *carsyms;
53 bfd_size_type amt;
55 ardata->symdefs = NULL;
57 /* Get the name of the first element. */
58 arhdrpos = bfd_tell (abfd);
59 i = bfd_bread ((PTR) nextname, (bfd_size_type) 16, abfd);
60 if (i == 0)
61 return true;
62 if (i != 16)
63 return false;
65 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
66 return false;
68 /* Archives with traditional armaps are still permitted. */
69 if (strncmp (nextname, "/ ", 16) == 0)
70 return bfd_slurp_armap (abfd);
72 if (strncmp (nextname, "/SYM64/ ", 16) != 0)
74 bfd_has_map (abfd) = false;
75 return true;
78 mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
79 if (mapdata == NULL)
80 return false;
81 parsed_size = mapdata->parsed_size;
82 bfd_release (abfd, (PTR) mapdata);
84 if (bfd_bread (int_buf, (bfd_size_type) 8, abfd) != 8)
86 if (bfd_get_error () != bfd_error_system_call)
87 bfd_set_error (bfd_error_malformed_archive);
88 return false;
91 nsymz = bfd_getb64 (int_buf);
92 stringsize = parsed_size - 8 * nsymz - 8;
94 carsym_size = nsymz * sizeof (carsym);
95 ptrsize = 8 * nsymz;
97 amt = carsym_size + stringsize + 1;
98 ardata->symdefs = (carsym *) bfd_zalloc (abfd, amt);
99 if (ardata->symdefs == NULL)
100 return false;
101 carsyms = ardata->symdefs;
102 stringbase = ((char *) ardata->symdefs) + carsym_size;
104 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
105 if (raw_armap == NULL)
106 goto release_symdefs;
108 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
109 || bfd_bread (stringbase, stringsize, abfd) != stringsize)
111 if (bfd_get_error () != bfd_error_system_call)
112 bfd_set_error (bfd_error_malformed_archive);
113 goto release_raw_armap;
116 for (i = 0; i < nsymz; i++)
118 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
119 carsyms->name = stringbase;
120 stringbase += strlen (stringbase) + 1;
121 ++carsyms;
123 *stringbase = '\0';
125 ardata->symdef_count = nsymz;
126 ardata->first_file_filepos = bfd_tell (abfd);
127 /* Pad to an even boundary if you have to. */
128 ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
130 bfd_has_map (abfd) = true;
131 bfd_release (abfd, raw_armap);
133 return true;
135 release_raw_armap:
136 bfd_release (abfd, raw_armap);
137 release_symdefs:
138 bfd_release (abfd, ardata->symdefs);
139 return false;
142 /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
143 able to handle ordinary ELF armaps, but at least on Irix 6.2 the
144 linker crashes. */
146 boolean
147 bfd_elf64_archive_write_armap (arch, elength, map, symbol_count, stridx)
148 bfd *arch;
149 unsigned int elength;
150 struct orl *map;
151 unsigned int symbol_count;
152 int stridx;
154 unsigned int ranlibsize = (symbol_count * 8) + 8;
155 unsigned int stringsize = stridx;
156 unsigned int mapsize = stringsize + ranlibsize;
157 file_ptr archive_member_file_ptr;
158 bfd *current = arch->archive_head;
159 unsigned int count;
160 struct ar_hdr hdr;
161 unsigned int i;
162 int padding;
163 bfd_byte buf[8];
165 padding = BFD_ALIGN (mapsize, 8) - mapsize;
166 mapsize += padding;
168 /* work out where the first object file will go in the archive */
169 archive_member_file_ptr = (mapsize
170 + elength
171 + sizeof (struct ar_hdr)
172 + SARMAG);
174 memset ((char *) (&hdr), 0, sizeof (struct ar_hdr));
175 strcpy (hdr.ar_name, "/SYM64/");
176 sprintf (hdr.ar_size, "%-10d", (int) mapsize);
177 sprintf (hdr.ar_date, "%ld", (long) time (NULL));
178 /* This, at least, is what Intel coff sets the values to.: */
179 sprintf ((hdr.ar_uid), "%d", 0);
180 sprintf ((hdr.ar_gid), "%d", 0);
181 sprintf ((hdr.ar_mode), "%-7o", (unsigned) 0);
182 strncpy (hdr.ar_fmag, ARFMAG, 2);
184 for (i = 0; i < sizeof (struct ar_hdr); i++)
185 if (((char *) (&hdr))[i] == '\0')
186 (((char *) (&hdr))[i]) = ' ';
188 /* Write the ar header for this item and the number of symbols */
190 if (bfd_bwrite ((PTR) &hdr, (bfd_size_type) sizeof (struct ar_hdr), arch)
191 != sizeof (struct ar_hdr))
192 return false;
194 bfd_putb64 ((bfd_vma) symbol_count, buf);
195 if (bfd_bwrite (buf, (bfd_size_type) 8, arch) != 8)
196 return false;
198 /* Two passes, first write the file offsets for each symbol -
199 remembering that each offset is on a two byte boundary. */
201 /* Write out the file offset for the file associated with each
202 symbol, and remember to keep the offsets padded out. */
204 current = arch->archive_head;
205 count = 0;
206 while (current != (bfd *) NULL && count < symbol_count)
208 /* For each symbol which is used defined in this object, write out
209 the object file's address in the archive */
211 while (map[count].u.abfd == current)
213 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
214 if (bfd_bwrite (buf, (bfd_size_type) 8, arch) != 8)
215 return false;
216 count++;
218 /* Add size of this archive entry */
219 archive_member_file_ptr += (arelt_size (current)
220 + sizeof (struct ar_hdr));
221 /* remember about the even alignment */
222 archive_member_file_ptr += archive_member_file_ptr % 2;
223 current = current->next;
226 /* now write the strings themselves */
227 for (count = 0; count < symbol_count; count++)
229 size_t len = strlen (*map[count].name) + 1;
231 if (bfd_bwrite (*map[count].name, (bfd_size_type) len, arch) != len)
232 return false;
235 /* The spec says that this should be padded to an 8 byte boundary.
236 However, the Irix 6.2 tools do not appear to do this. */
237 while (padding != 0)
239 if (bfd_bwrite ("", (bfd_size_type) 1, arch) != 1)
240 return false;
241 --padding;
244 return true;