1 /* MIPS-specific support for 64-bit ELF 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2006, 2007 3 Free Software Foundation, Inc. 4 Ian Lance Taylor, Cygnus Support 5 Linker support added by Mark Mitchell, CodeSourcery, LLC. 6 <mark@codesourcery.com> 7 8 This file is part of BFD, the Binary File Descriptor library. 9 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. 14 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. 19 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. */ 24 25 /* This file supports the 64-bit (MIPS) ELF archives. */ 26 27 #include "sysdep.h" 28 #include "bfd.h" 29 #include "libbfd.h" 30 #include "aout/ar.h" 31 32 /* Irix 6 defines a 64bit archive map format, so that they can 33 have archives more than 4 GB in size. */ 34 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); 38 39 /* Read an Irix 6 armap. */ 40 41 bfd_boolean 42 bfd_elf64_archive_slurp_armap (bfd *abfd) 43 { 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; 54 55 ardata->symdefs = NULL; 56 57 /* Get the name of the first element. */ 58 arhdrpos = bfd_tell (abfd); 59 i = bfd_bread (nextname, 16, abfd); 60 if (i == 0) 61 return TRUE; 62 if (i != 16) 63 return FALSE; 64 65 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0) 66 return FALSE; 67 68 /* Archives with traditional armaps are still permitted. */ 69 if (CONST_STRNEQ (nextname, "/ ")) 70 return bfd_slurp_armap (abfd); 71 72 if (! CONST_STRNEQ (nextname, "/SYM64/ ")) 73 { 74 bfd_has_map (abfd) = FALSE; 75 return TRUE; 76 } 77 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, mapdata); 83 84 if (bfd_bread (int_buf, 8, abfd) != 8) 85 { 86 if (bfd_get_error () != bfd_error_system_call) 87 bfd_set_error (bfd_error_malformed_archive); 88 return FALSE; 89 } 90 91 nsymz = bfd_getb64 (int_buf); 92 stringsize = parsed_size - 8 * nsymz - 8; 93 94 carsym_size = nsymz * sizeof (carsym); 95 ptrsize = 8 * nsymz; 96 97 amt = carsym_size + stringsize + 1; 98 ardata->symdefs = bfd_zalloc (abfd, amt); 99 if (ardata->symdefs == NULL) 100 return FALSE; 101 carsyms = ardata->symdefs; 102 stringbase = ((char *) ardata->symdefs) + carsym_size; 103 104 raw_armap = bfd_alloc (abfd, ptrsize); 105 if (raw_armap == NULL) 106 goto release_symdefs; 107 108 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize 109 || bfd_bread (stringbase, stringsize, abfd) != stringsize) 110 { 111 if (bfd_get_error () != bfd_error_system_call) 112 bfd_set_error (bfd_error_malformed_archive); 113 goto release_raw_armap; 114 } 115 116 for (i = 0; i < nsymz; i++) 117 { 118 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8); 119 carsyms->name = stringbase; 120 stringbase += strlen (stringbase) + 1; 121 ++carsyms; 122 } 123 *stringbase = '\0'; 124 125 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; 129 130 bfd_has_map (abfd) = TRUE; 131 bfd_release (abfd, raw_armap); 132 133 return TRUE; 134 135 release_raw_armap: 136 bfd_release (abfd, raw_armap); 137 release_symdefs: 138 bfd_release (abfd, ardata->symdefs); 139 return FALSE; 140 } 141 142 /* 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. */ 145 146 bfd_boolean 147 bfd_elf64_archive_write_armap (bfd *arch, 148 unsigned int elength, 149 struct orl *map, 150 unsigned int symbol_count, 151 int stridx) 152 { 153 unsigned int ranlibsize = (symbol_count * 8) + 8; 154 unsigned int stringsize = stridx; 155 unsigned int mapsize = stringsize + ranlibsize; 156 file_ptr archive_member_file_ptr; 157 bfd *current = arch->archive_head; 158 unsigned int count; 159 struct ar_hdr hdr; 160 int padding; 161 bfd_byte buf[8]; 162 163 padding = BFD_ALIGN (mapsize, 8) - mapsize; 164 mapsize += padding; 165 166 /* work out where the first object file will go in the archive */ 167 archive_member_file_ptr = (mapsize 168 + elength 169 + sizeof (struct ar_hdr) 170 + SARMAG); 171 172 memset (&hdr, ' ', sizeof (struct ar_hdr)); 173 memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/")); 174 _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld", 175 mapsize); 176 _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", 177 time (NULL)); 178 /* This, at least, is what Intel coff sets the values to.: */ 179 _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0); 180 _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0); 181 _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0); 182 memcpy (hdr.ar_fmag, ARFMAG, 2); 183 184 /* Write the ar header for this item and the number of symbols */ 185 186 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) 187 != sizeof (struct ar_hdr)) 188 return FALSE; 189 190 bfd_putb64 ((bfd_vma) symbol_count, buf); 191 if (bfd_bwrite (buf, 8, arch) != 8) 192 return FALSE; 193 194 /* Two passes, first write the file offsets for each symbol - 195 remembering that each offset is on a two byte boundary. */ 196 197 /* Write out the file offset for the file associated with each 198 symbol, and remember to keep the offsets padded out. */ 199 200 current = arch->archive_head; 201 count = 0; 202 while (current != NULL && count < symbol_count) 203 { 204 /* For each symbol which is used defined in this object, write out 205 the object file's address in the archive */ 206 207 while (map[count].u.abfd == current) 208 { 209 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf); 210 if (bfd_bwrite (buf, 8, arch) != 8) 211 return FALSE; 212 count++; 213 } 214 /* Add size of this archive entry */ 215 archive_member_file_ptr += (arelt_size (current) 216 + sizeof (struct ar_hdr)); 217 /* remember about the even alignment */ 218 archive_member_file_ptr += archive_member_file_ptr % 2; 219 current = current->archive_next; 220 } 221 222 /* now write the strings themselves */ 223 for (count = 0; count < symbol_count; count++) 224 { 225 size_t len = strlen (*map[count].name) + 1; 226 227 if (bfd_bwrite (*map[count].name, len, arch) != len) 228 return FALSE; 229 } 230 231 /* The spec says that this should be padded to an 8 byte boundary. 232 However, the Irix 6.2 tools do not appear to do this. */ 233 while (padding != 0) 234 { 235 if (bfd_bwrite ("", 1, arch) != 1) 236 return FALSE; 237 --padding; 238 } 239 240 return TRUE; 241 } 242