247 lines
7.2 KiB
C
247 lines
7.2 KiB
C
/* Support for 64-bit archives.
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Copyright (C) 1996-2017 Free Software Foundation, Inc.
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Ian Lance Taylor, Cygnus Support
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Linker support added by Mark Mitchell, CodeSourcery, LLC.
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<mark@codesourcery.com>
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* This file supports the 64-bit archives. We use the same format as
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the 64-bit (MIPS) ELF archives. */
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#include "sysdep.h"
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#include "bfd.h"
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#include "libbfd.h"
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#include "aout/ar.h"
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/* Irix 6 defines a 64bit archive map format, so that they can
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have archives more than 4 GB in size. */
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/* Read an Irix 6 armap. */
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bfd_boolean
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_bfd_archive_64_bit_slurp_armap (bfd *abfd)
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{
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struct artdata *ardata = bfd_ardata (abfd);
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char nextname[17];
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bfd_size_type i, parsed_size, nsymz, stringsize, carsym_size, ptrsize;
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struct areltdata *mapdata;
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bfd_byte int_buf[8];
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char *stringbase;
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char *stringend;
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bfd_byte *raw_armap = NULL;
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carsym *carsyms;
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bfd_size_type amt;
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ardata->symdefs = NULL;
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/* Get the name of the first element. */
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i = bfd_bread (nextname, 16, abfd);
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if (i == 0)
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return TRUE;
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if (i != 16)
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return FALSE;
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if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0)
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return FALSE;
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/* Archives with traditional armaps are still permitted. */
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if (CONST_STRNEQ (nextname, "/ "))
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return bfd_slurp_armap (abfd);
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if (! CONST_STRNEQ (nextname, "/SYM64/ "))
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{
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bfd_has_map (abfd) = FALSE;
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return TRUE;
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}
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mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd);
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if (mapdata == NULL)
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return FALSE;
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parsed_size = mapdata->parsed_size;
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free (mapdata);
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if (bfd_bread (int_buf, 8, abfd) != 8)
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{
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_malformed_archive);
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return FALSE;
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}
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nsymz = bfd_getb64 (int_buf);
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stringsize = parsed_size - 8 * nsymz - 8;
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carsym_size = nsymz * sizeof (carsym);
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ptrsize = 8 * nsymz;
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amt = carsym_size + stringsize + 1;
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if (carsym_size < nsymz || ptrsize < nsymz || amt < nsymz)
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{
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bfd_set_error (bfd_error_malformed_archive);
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return FALSE;
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}
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ardata->symdefs = (struct carsym *) bfd_zalloc (abfd, amt);
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if (ardata->symdefs == NULL)
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return FALSE;
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carsyms = ardata->symdefs;
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stringbase = ((char *) ardata->symdefs) + carsym_size;
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stringbase[stringsize] = 0;
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stringend = stringbase + stringsize;
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raw_armap = (bfd_byte *) bfd_alloc (abfd, ptrsize);
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if (raw_armap == NULL)
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goto release_symdefs;
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if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize
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|| bfd_bread (stringbase, stringsize, abfd) != stringsize)
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{
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if (bfd_get_error () != bfd_error_system_call)
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bfd_set_error (bfd_error_malformed_archive);
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goto release_raw_armap;
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}
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for (i = 0; i < nsymz; i++)
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{
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carsyms->file_offset = bfd_getb64 (raw_armap + i * 8);
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carsyms->name = stringbase;
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if (stringbase < stringend)
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stringbase += strlen (stringbase) + 1;
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++carsyms;
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}
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*stringbase = '\0';
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ardata->symdef_count = nsymz;
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ardata->first_file_filepos = bfd_tell (abfd);
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/* Pad to an even boundary if you have to. */
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ardata->first_file_filepos += (ardata->first_file_filepos) % 2;
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bfd_has_map (abfd) = TRUE;
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bfd_release (abfd, raw_armap);
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return TRUE;
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release_raw_armap:
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bfd_release (abfd, raw_armap);
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release_symdefs:
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bfd_release (abfd, ardata->symdefs);
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return FALSE;
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}
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/* Write out an Irix 6 armap. The Irix 6 tools are supposed to be
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able to handle ordinary ELF armaps, but at least on Irix 6.2 the
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linker crashes. */
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bfd_boolean
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_bfd_archive_64_bit_write_armap (bfd *arch,
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unsigned int elength,
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struct orl *map,
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unsigned int symbol_count,
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int stridx)
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{
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unsigned int ranlibsize = (symbol_count * 8) + 8;
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unsigned int stringsize = stridx;
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unsigned int mapsize = stringsize + ranlibsize;
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file_ptr archive_member_file_ptr;
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bfd *current = arch->archive_head;
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unsigned int count;
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struct ar_hdr hdr;
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int padding;
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bfd_byte buf[8];
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padding = BFD_ALIGN (mapsize, 8) - mapsize;
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mapsize += padding;
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/* work out where the first object file will go in the archive */
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archive_member_file_ptr = (mapsize
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+ elength
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+ sizeof (struct ar_hdr)
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+ SARMAG);
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memset (&hdr, ' ', sizeof (struct ar_hdr));
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memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/"));
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if (!_bfd_ar_sizepad (hdr.ar_size, sizeof (hdr.ar_size), mapsize))
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return FALSE;
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_bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld",
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time (NULL));
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/* This, at least, is what Intel coff sets the values to.: */
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_bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0);
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_bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0);
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_bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0);
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memcpy (hdr.ar_fmag, ARFMAG, 2);
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/* Write the ar header for this item and the number of symbols */
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if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch)
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!= sizeof (struct ar_hdr))
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return FALSE;
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bfd_putb64 ((bfd_vma) symbol_count, buf);
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if (bfd_bwrite (buf, 8, arch) != 8)
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return FALSE;
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/* Two passes, first write the file offsets for each symbol -
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remembering that each offset is on a two byte boundary. */
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/* Write out the file offset for the file associated with each
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symbol, and remember to keep the offsets padded out. */
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count = 0;
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for (current = arch->archive_head;
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current != NULL && count < symbol_count;
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current = current->archive_next)
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{
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/* For each symbol which is used defined in this object, write out
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the object file's address in the archive. */
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for (;
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count < symbol_count && map[count].u.abfd == current;
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count++)
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{
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bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf);
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if (bfd_bwrite (buf, 8, arch) != 8)
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return FALSE;
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}
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/* Add size of this archive entry */
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archive_member_file_ptr += sizeof (struct ar_hdr);
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if (! bfd_is_thin_archive (arch))
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archive_member_file_ptr += arelt_size (current);
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/* remember about the even alignment */
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archive_member_file_ptr += archive_member_file_ptr % 2;
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}
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/* now write the strings themselves */
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for (count = 0; count < symbol_count; count++)
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{
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size_t len = strlen (*map[count].name) + 1;
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if (bfd_bwrite (*map[count].name, len, arch) != len)
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return FALSE;
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}
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/* The spec says that this should be padded to an 8 byte boundary.
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However, the Irix 6.2 tools do not appear to do this. */
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while (padding != 0)
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{
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if (bfd_bwrite ("", 1, arch) != 1)
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return FALSE;
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--padding;
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}
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return TRUE;
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}
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