1 /* MIPS-specific support for 64-bit ELF 2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 23 24 /* This file supports the 64-bit (MIPS) ELF archives. */ 25 26 #include "bfd.h" 27 #include "sysdep.h" 28 #include "libbfd.h" 29 #include "aout/ar.h" 30 31 /* Irix 6 defines a 64bit archive map format, so that they can 32 have archives more than 4 GB in size. */ 33 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); 37 38 /* Read an Irix 6 armap. */ 39 40 bfd_boolean 41 bfd_elf64_archive_slurp_armap (bfd *abfd) 42 { 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; 53 54 ardata->symdefs = NULL; 55 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; 63 64 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0) 65 return FALSE; 66 67 /* Archives with traditional armaps are still permitted. */ 68 if (strncmp (nextname, "/ ", 16) == 0) 69 return bfd_slurp_armap (abfd); 70 71 if (strncmp (nextname, "/SYM64/ ", 16) != 0) 72 { 73 bfd_has_map (abfd) = FALSE; 74 return TRUE; 75 } 76 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); 82 83 if (bfd_bread (int_buf, 8, abfd) != 8) 84 { 85 if (bfd_get_error () != bfd_error_system_call) 86 bfd_set_error (bfd_error_malformed_archive); 87 return FALSE; 88 } 89 90 nsymz = bfd_getb64 (int_buf); 91 stringsize = parsed_size - 8 * nsymz - 8; 92 93 carsym_size = nsymz * sizeof (carsym); 94 ptrsize = 8 * nsymz; 95 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; 102 103 raw_armap = bfd_alloc (abfd, ptrsize); 104 if (raw_armap == NULL) 105 goto release_symdefs; 106 107 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize 108 || bfd_bread (stringbase, stringsize, abfd) != stringsize) 109 { 110 if (bfd_get_error () != bfd_error_system_call) 111 bfd_set_error (bfd_error_malformed_archive); 112 goto release_raw_armap; 113 } 114 115 for (i = 0; i < nsymz; i++) 116 { 117 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8); 118 carsyms->name = stringbase; 119 stringbase += strlen (stringbase) + 1; 120 ++carsyms; 121 } 122 *stringbase = '\0'; 123 124 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; 128 129 bfd_has_map (abfd) = TRUE; 130 bfd_release (abfd, raw_armap); 131 132 return TRUE; 133 134 release_raw_armap: 135 bfd_release (abfd, raw_armap); 136 release_symdefs: 137 bfd_release (abfd, ardata->symdefs); 138 return FALSE; 139 } 140 141 /* 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. */ 144 145 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) 151 { 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 unsigned int i; 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, 0, sizeof (struct ar_hdr)); 173 strcpy (hdr.ar_name, "/SYM64/"); 174 sprintf (hdr.ar_size, "%-10d", (int) mapsize); 175 sprintf (hdr.ar_date, "%ld", (long) time (NULL)); 176 /* This, at least, is what Intel coff sets the values to.: */ 177 sprintf ((hdr.ar_uid), "%d", 0); 178 sprintf ((hdr.ar_gid), "%d", 0); 179 sprintf ((hdr.ar_mode), "%-7o", (unsigned) 0); 180 strncpy (hdr.ar_fmag, ARFMAG, 2); 181 182 for (i = 0; i < sizeof (struct ar_hdr); i++) 183 if (((char *) (&hdr))[i] == '\0') 184 (((char *) (&hdr))[i]) = ' '; 185 186 /* Write the ar header for this item and the number of symbols */ 187 188 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) 189 != sizeof (struct ar_hdr)) 190 return FALSE; 191 192 bfd_putb64 ((bfd_vma) symbol_count, buf); 193 if (bfd_bwrite (buf, 8, arch) != 8) 194 return FALSE; 195 196 /* Two passes, first write the file offsets for each symbol - 197 remembering that each offset is on a two byte boundary. */ 198 199 /* Write out the file offset for the file associated with each 200 symbol, and remember to keep the offsets padded out. */ 201 202 current = arch->archive_head; 203 count = 0; 204 while (current != NULL && count < symbol_count) 205 { 206 /* For each symbol which is used defined in this object, write out 207 the object file's address in the archive */ 208 209 while (map[count].u.abfd == current) 210 { 211 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf); 212 if (bfd_bwrite (buf, 8, arch) != 8) 213 return FALSE; 214 count++; 215 } 216 /* Add size of this archive entry */ 217 archive_member_file_ptr += (arelt_size (current) 218 + sizeof (struct ar_hdr)); 219 /* remember about the even alignment */ 220 archive_member_file_ptr += archive_member_file_ptr % 2; 221 current = current->next; 222 } 223 224 /* now write the strings themselves */ 225 for (count = 0; count < symbol_count; count++) 226 { 227 size_t len = strlen (*map[count].name) + 1; 228 229 if (bfd_bwrite (*map[count].name, len, arch) != len) 230 return FALSE; 231 } 232 233 /* The spec says that this should be padded to an 8 byte boundary. 234 However, the Irix 6.2 tools do not appear to do this. */ 235 while (padding != 0) 236 { 237 if (bfd_bwrite ("", 1, arch) != 1) 238 return FALSE; 239 --padding; 240 } 241 242 return TRUE; 243 } 244