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> 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 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 i = bfd_bread (nextname, 16, abfd); 58 if (i == 0) 59 return TRUE; 60 if (i != 16) 61 return FALSE; 62 63 if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0) 64 return FALSE; 65 66 /* Archives with traditional armaps are still permitted. */ 67 if (CONST_STRNEQ (nextname, "/ ")) 68 return bfd_slurp_armap (abfd); 69 70 if (! CONST_STRNEQ (nextname, "/SYM64/ ")) 71 { 72 bfd_has_map (abfd) = FALSE; 73 return TRUE; 74 } 75 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); 81 82 if (bfd_bread (int_buf, 8, abfd) != 8) 83 { 84 if (bfd_get_error () != bfd_error_system_call) 85 bfd_set_error (bfd_error_malformed_archive); 86 return FALSE; 87 } 88 89 nsymz = bfd_getb64 (int_buf); 90 stringsize = parsed_size - 8 * nsymz - 8; 91 92 carsym_size = nsymz * sizeof (carsym); 93 ptrsize = 8 * nsymz; 94 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; 101 102 raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize); 103 if (raw_armap == NULL) 104 goto release_symdefs; 105 106 if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize 107 || bfd_bread (stringbase, stringsize, abfd) != stringsize) 108 { 109 if (bfd_get_error () != bfd_error_system_call) 110 bfd_set_error (bfd_error_malformed_archive); 111 goto release_raw_armap; 112 } 113 114 for (i = 0; i < nsymz; i++) 115 { 116 carsyms->file_offset = bfd_getb64 (raw_armap + i * 8); 117 carsyms->name = stringbase; 118 stringbase += strlen (stringbase) + 1; 119 ++carsyms; 120 } 121 *stringbase = '\0'; 122 123 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; 127 128 bfd_has_map (abfd) = TRUE; 129 bfd_release (abfd, raw_armap); 130 131 return TRUE; 132 133 release_raw_armap: 134 bfd_release (abfd, raw_armap); 135 release_symdefs: 136 bfd_release (abfd, ardata->symdefs); 137 return FALSE; 138 } 139 140 /* 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. */ 143 144 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) 150 { 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]; 160 161 padding = BFD_ALIGN (mapsize, 8) - mapsize; 162 mapsize += padding; 163 164 /* 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); 169 170 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); 181 182 /* Write the ar header for this item and the number of symbols */ 183 184 if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) 185 != sizeof (struct ar_hdr)) 186 return FALSE; 187 188 bfd_putb64 ((bfd_vma) symbol_count, buf); 189 if (bfd_bwrite (buf, 8, arch) != 8) 190 return FALSE; 191 192 /* Two passes, first write the file offsets for each symbol - 193 remembering that each offset is on a two byte boundary. */ 194 195 /* 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) 201 { 202 /* For each symbol which is used defined in this object, write out 203 the object file's address in the archive */ 204 205 for (; 206 count < symbol_count && map[count].u.abfd == current; 207 count++) 208 { 209 bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf); 210 if (bfd_bwrite (buf, 8, arch) != 8) 211 return FALSE; 212 } 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 } 219 220 /* now write the strings themselves */ 221 for (count = 0; count < symbol_count; count++) 222 { 223 size_t len = strlen (*map[count].name) + 1; 224 225 if (bfd_bwrite (*map[count].name, len, arch) != len) 226 return FALSE; 227 } 228 229 /* 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) 232 { 233 if (bfd_bwrite ("", 1, arch) != 1) 234 return FALSE; 235 --padding; 236 } 237 238 return TRUE; 239 } 240