/* MIPS-specific support for 64-bit ELF Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2006, 2007 Free Software Foundation, Inc. Ian Lance Taylor, Cygnus Support Linker support added by Mark Mitchell, CodeSourcery, LLC. <mark@codesourcery.com> This file is part of BFD, the Binary File Descriptor library. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ /* This file supports the 64-bit (MIPS) ELF archives. */ #include "sysdep.h" #include "bfd.h" #include "libbfd.h" #include "aout/ar.h" /* Irix 6 defines a 64bit archive map format, so that they can have archives more than 4 GB in size. */ bfd_boolean bfd_elf64_archive_slurp_armap (bfd *); bfd_boolean bfd_elf64_archive_write_armap (bfd *, unsigned int, struct orl *, unsigned int, int); /* Read an Irix 6 armap. */ bfd_boolean bfd_elf64_archive_slurp_armap (bfd *abfd) { struct artdata *ardata = bfd_ardata (abfd); char nextname[17]; file_ptr arhdrpos; bfd_size_type i, parsed_size, nsymz, stringsize, carsym_size, ptrsize; struct areltdata *mapdata; bfd_byte int_buf[8]; char *stringbase; bfd_byte *raw_armap = NULL; carsym *carsyms; bfd_size_type amt; ardata->symdefs = NULL; /* Get the name of the first element. */ arhdrpos = bfd_tell (abfd); i = bfd_bread (nextname, 16, abfd); if (i == 0) return TRUE; if (i != 16) return FALSE; if (bfd_seek (abfd, (file_ptr) - 16, SEEK_CUR) != 0) return FALSE; /* Archives with traditional armaps are still permitted. */ if (CONST_STRNEQ (nextname, "/ ")) return bfd_slurp_armap (abfd); if (! CONST_STRNEQ (nextname, "/SYM64/ ")) { bfd_has_map (abfd) = FALSE; return TRUE; } mapdata = (struct areltdata *) _bfd_read_ar_hdr (abfd); if (mapdata == NULL) return FALSE; parsed_size = mapdata->parsed_size; bfd_release (abfd, mapdata); if (bfd_bread (int_buf, 8, abfd) != 8) { if (bfd_get_error () != bfd_error_system_call) bfd_set_error (bfd_error_malformed_archive); return FALSE; } nsymz = bfd_getb64 (int_buf); stringsize = parsed_size - 8 * nsymz - 8; carsym_size = nsymz * sizeof (carsym); ptrsize = 8 * nsymz; amt = carsym_size + stringsize + 1; ardata->symdefs = bfd_zalloc (abfd, amt); if (ardata->symdefs == NULL) return FALSE; carsyms = ardata->symdefs; stringbase = ((char *) ardata->symdefs) + carsym_size; raw_armap = bfd_alloc (abfd, ptrsize); if (raw_armap == NULL) goto release_symdefs; if (bfd_bread (raw_armap, ptrsize, abfd) != ptrsize || bfd_bread (stringbase, stringsize, abfd) != stringsize) { if (bfd_get_error () != bfd_error_system_call) bfd_set_error (bfd_error_malformed_archive); goto release_raw_armap; } for (i = 0; i < nsymz; i++) { carsyms->file_offset = bfd_getb64 (raw_armap + i * 8); carsyms->name = stringbase; stringbase += strlen (stringbase) + 1; ++carsyms; } *stringbase = '\0'; ardata->symdef_count = nsymz; ardata->first_file_filepos = bfd_tell (abfd); /* Pad to an even boundary if you have to. */ ardata->first_file_filepos += (ardata->first_file_filepos) % 2; bfd_has_map (abfd) = TRUE; bfd_release (abfd, raw_armap); return TRUE; release_raw_armap: bfd_release (abfd, raw_armap); release_symdefs: bfd_release (abfd, ardata->symdefs); return FALSE; } /* Write out an Irix 6 armap. The Irix 6 tools are supposed to be able to handle ordinary ELF armaps, but at least on Irix 6.2 the linker crashes. */ bfd_boolean bfd_elf64_archive_write_armap (bfd *arch, unsigned int elength, struct orl *map, unsigned int symbol_count, int stridx) { unsigned int ranlibsize = (symbol_count * 8) + 8; unsigned int stringsize = stridx; unsigned int mapsize = stringsize + ranlibsize; file_ptr archive_member_file_ptr; bfd *current = arch->archive_head; unsigned int count; struct ar_hdr hdr; int padding; bfd_byte buf[8]; padding = BFD_ALIGN (mapsize, 8) - mapsize; mapsize += padding; /* work out where the first object file will go in the archive */ archive_member_file_ptr = (mapsize + elength + sizeof (struct ar_hdr) + SARMAG); memset (&hdr, ' ', sizeof (struct ar_hdr)); memcpy (hdr.ar_name, "/SYM64/", strlen ("/SYM64/")); _bfd_ar_spacepad (hdr.ar_size, sizeof (hdr.ar_size), "%-10ld", mapsize); _bfd_ar_spacepad (hdr.ar_date, sizeof (hdr.ar_date), "%ld", time (NULL)); /* This, at least, is what Intel coff sets the values to.: */ _bfd_ar_spacepad (hdr.ar_uid, sizeof (hdr.ar_uid), "%ld", 0); _bfd_ar_spacepad (hdr.ar_gid, sizeof (hdr.ar_gid), "%ld", 0); _bfd_ar_spacepad (hdr.ar_mode, sizeof (hdr.ar_mode), "%-7lo", 0); memcpy (hdr.ar_fmag, ARFMAG, 2); /* Write the ar header for this item and the number of symbols */ if (bfd_bwrite (&hdr, sizeof (struct ar_hdr), arch) != sizeof (struct ar_hdr)) return FALSE; bfd_putb64 ((bfd_vma) symbol_count, buf); if (bfd_bwrite (buf, 8, arch) != 8) return FALSE; /* Two passes, first write the file offsets for each symbol - remembering that each offset is on a two byte boundary. */ /* Write out the file offset for the file associated with each symbol, and remember to keep the offsets padded out. */ current = arch->archive_head; count = 0; while (current != NULL && count < symbol_count) { /* For each symbol which is used defined in this object, write out the object file's address in the archive */ while (map[count].u.abfd == current) { bfd_putb64 ((bfd_vma) archive_member_file_ptr, buf); if (bfd_bwrite (buf, 8, arch) != 8) return FALSE; count++; } /* Add size of this archive entry */ archive_member_file_ptr += (arelt_size (current) + sizeof (struct ar_hdr)); /* remember about the even alignment */ archive_member_file_ptr += archive_member_file_ptr % 2; current = current->archive_next; } /* now write the strings themselves */ for (count = 0; count < symbol_count; count++) { size_t len = strlen (*map[count].name) + 1; if (bfd_bwrite (*map[count].name, len, arch) != len) return FALSE; } /* The spec says that this should be padded to an 8 byte boundary. However, the Irix 6.2 tools do not appear to do this. */ while (padding != 0) { if (bfd_bwrite ("", 1, arch) != 1) return FALSE; --padding; } return TRUE; }