| File: | src/gnu/usr.bin/binutils-2.17/bfd/archive64.c |
| Warning: | line 57, column 3 Value stored to 'arhdrpos' is never read |
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| 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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)((abfd)->tdata.aout_ar_data); |
| 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((void*)0); |
| 51 | carsym *carsyms; |
| 52 | bfd_size_type amt; |
| 53 | |
| 54 | ardata->symdefs = NULL((void*)0); |
| 55 | |
| 56 | /* Get the name of the first element. */ |
| 57 | arhdrpos = bfd_tell (abfd); |
Value stored to 'arhdrpos' is never read | |
| 58 | i = bfd_bread (nextname, 16, abfd); |
| 59 | if (i == 0) |
| 60 | return TRUE1; |
| 61 | if (i != 16) |
| 62 | return FALSE0; |
| 63 | |
| 64 | if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR1) != 0) |
| 65 | return FALSE0; |
| 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)((abfd)->has_armap) = FALSE0; |
| 74 | return TRUE1; |
| 75 | } |
| 76 | |
| 77 | mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd)((*((abfd)->xvec->_bfd_read_ar_hdr_fn)) (abfd)); |
| 78 | if (mapdata == NULL((void*)0)) |
| 79 | return FALSE0; |
| 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 FALSE0; |
| 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((void*)0)) |
| 99 | return FALSE0; |
| 100 | carsyms = ardata->symdefs; |
| 101 | stringbase = ((char *) ardata->symdefs) + carsym_size; |
| 102 | |
| 103 | raw_armap = bfd_alloc (abfd, ptrsize); |
| 104 | if (raw_armap == NULL((void*)0)) |
| 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)((abfd)->has_armap) = TRUE1; |
| 130 | bfd_release (abfd, raw_armap); |
| 131 | |
| 132 | return TRUE1; |
| 133 | |
| 134 | release_raw_armap: |
| 135 | bfd_release (abfd, raw_armap); |
| 136 | release_symdefs: |
| 137 | bfd_release (abfd, ardata->symdefs); |
| 138 | return FALSE0; |
| 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 | int padding; |
| 160 | bfd_byte buf[8]; |
| 161 | |
| 162 | padding = BFD_ALIGN (mapsize, 8)((((bfd_vma) (mapsize) + (8) - 1) >= (bfd_vma) (mapsize)) ? (((bfd_vma) (mapsize) + ((8) - 1)) & ~ (bfd_vma) ((8)-1) ) : ~ (bfd_vma) 0) - mapsize; |
| 163 | mapsize += padding; |
| 164 | |
| 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 | + SARMAG8); |
| 170 | |
| 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_spacepadll (hdr.ar_date, sizeof (hdr.ar_date), "%lld", |
| 176 | time (NULL((void*)0))); |
| 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"`\012", 2); |
| 182 | |
| 183 | /* Write the ar header for this item and the number of symbols */ |
| 184 | |
| 185 | if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) |
| 186 | != sizeof (struct ar_hdr)) |
| 187 | return FALSE0; |
| 188 | |
| 189 | bfd_putb64 ((bfd_vma) symbol_count, buf); |
| 190 | if (bfd_bwrite (buf, 8, arch) != 8) |
| 191 | return FALSE0; |
| 192 | |
| 193 | /* Two passes, first write the file offsets for each symbol - |
| 194 | remembering that each offset is on a two byte boundary. */ |
| 195 | |
| 196 | /* Write out the file offset for the file associated with each |
| 197 | symbol, and remember to keep the offsets padded out. */ |
| 198 | |
| 199 | current = arch->archive_head; |
| 200 | count = 0; |
| 201 | while (current != NULL((void*)0) && count < symbol_count) |
| 202 | { |
| 203 | /* For each symbol which is used defined in this object, write out |
| 204 | the object file's address in the archive */ |
| 205 | |
| 206 | while (count < symbol_count && map[count].u.abfd == current) |
| 207 | { |
| 208 | bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf); |
| 209 | if (bfd_bwrite (buf, 8, arch) != 8) |
| 210 | return FALSE0; |
| 211 | count++; |
| 212 | } |
| 213 | /* Add size of this archive entry */ |
| 214 | archive_member_file_ptr += (arelt_size (current)(((struct areltdata *)((current)->arelt_data))->parsed_size ) |
| 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; |
| 219 | } |
| 220 | |
| 221 | /* now write the strings themselves */ |
| 222 | for (count = 0; count < symbol_count; count++) |
| 223 | { |
| 224 | size_t len = strlen (*map[count].name) + 1; |
| 225 | |
| 226 | if (bfd_bwrite (*map[count].name, len, arch) != len) |
| 227 | return FALSE0; |
| 228 | } |
| 229 | |
| 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) |
| 233 | { |
| 234 | if (bfd_bwrite ("", 1, arch) != 1) |
| 235 | return FALSE0; |
| 236 | --padding; |
| 237 | } |
| 238 | |
| 239 | return TRUE1; |
| 240 | } |